GNUnet  0.11.x
Data Structures | Macros | Enumerations | Functions
plugin_transport_http_client.c File Reference

HTTP/S client transport plugin. More...

#include "platform.h"
#include "gnunet_util_lib.h"
#include "gnunet_protocols.h"
#include "gnunet_transport_plugin.h"
#include "plugin_transport_http_common.h"
#include "gnunet_curl_lib.h"
Include dependency graph for plugin_transport_http_client.c:

Go to the source code of this file.

Data Structures

struct  HTTP_Message
 Message to send using http. More...
 
struct  RequestHandle
 The request handle. More...
 
struct  GNUNET_ATS_Session
 Session handle for connections. More...
 
struct  HTTP_Client_Plugin
 Encapsulation of all of the state of the plugin. More...
 
struct  GNUNET_ATS_SessionClientCtx
 Closure for session_lookup_client_by_address(). More...
 

Macros

#define PLUGIN_NAME   "http_client"
 
#define HTTP_STAT_STR_CONNECTIONS   "# HTTP client connections"
 
#define LIBGNUNET_PLUGIN_TRANSPORT_INIT   libgnunet_plugin_transport_http_client_init
 
#define LIBGNUNET_PLUGIN_TRANSPORT_DONE   libgnunet_plugin_transport_http_client_done
 
#define VERBOSE_CURL   GNUNET_NO
 
#define PUT_DISCONNECT_TIMEOUT
 
#define ENABLE_PUT   GNUNET_YES
 
#define ENABLE_GET   GNUNET_YES
 
#define LOG(kind, ...)   GNUNET_log_from (kind, PLUGIN_NAME, __VA_ARGS__)
 

Enumerations

enum  HTTP_PUT_REQUEST_STATE {
  H_NOT_CONNECTED, H_CONNECTED, H_PAUSED, H_TMP_DISCONNECTING,
  H_TMP_RECONNECT_REQUIRED, H_TMP_DISCONNECTED, H_DISCONNECTED
}
 State of a HTTP PUT request. More...
 

Functions

static int http_client_plugin_session_disconnect (void *cls, struct GNUNET_ATS_Session *s)
 Disconnect a session. More...
 
static void notify_session_monitor (struct HTTP_Client_Plugin *plugin, struct GNUNET_ATS_Session *session, enum GNUNET_TRANSPORT_SessionState state)
 If a session monitor is attached, notify it about the new session state. More...
 
static void client_delete_session (struct GNUNET_ATS_Session *s)
 Delete session s. More...
 
static void client_reschedule_session_timeout (struct GNUNET_ATS_Session *s)
 Increment session timeout due to activity for session s. More...
 
static void client_run (void *cls)
 Task performing curl operations. More...
 
static int client_schedule (struct HTTP_Client_Plugin *plugin, int now)
 Function setting up file descriptors and scheduling task to run. More...
 
static int client_connect_get (struct GNUNET_ATS_Session *s)
 Connect GET request. More...
 
static int client_connect_put (struct GNUNET_ATS_Session *s)
 Connect a HTTP put request. More...
 
static ssize_t http_client_plugin_send (void *cls, struct GNUNET_ATS_Session *s, const char *msgbuf, size_t msgbuf_size, unsigned int priority, struct GNUNET_TIME_Relative to, GNUNET_TRANSPORT_TransmitContinuation cont, void *cont_cls)
 Function that can be used by the transport service to transmit a message using the plugin. More...
 
static unsigned int http_client_query_keepalive_factor (void *cls)
 Function that is called to get the keepalive factor. More...
 
static int destroy_session_cb (void *cls, const struct GNUNET_PeerIdentity *peer, void *value)
 Callback to destroys all sessions on exit. More...
 
static void http_client_plugin_peer_disconnect (void *cls, const struct GNUNET_PeerIdentity *target)
 Function that can be used to force the plugin to disconnect from the given peer and cancel all previous transmissions (and their continuationc). More...
 
static int session_lookup_client_by_address (void *cls, const struct GNUNET_PeerIdentity *key, void *value)
 Locate the seession object for a given address. More...
 
static struct GNUNET_ATS_Sessionclient_lookup_session (struct HTTP_Client_Plugin *plugin, const struct GNUNET_HELLO_Address *address)
 Check if a sessions exists for an specific address. More...
 
static void client_put_disconnect (void *cls)
 When we have nothing to transmit, we pause the HTTP PUT after a while (so that gnurl stops asking). More...
 
static size_t client_send_cb (void *stream, size_t size, size_t nmemb, void *cls)
 Callback method used with libcurl Method is called when libcurl needs to read data during sending. More...
 
static void client_wake_up (void *cls)
 Wake up a curl handle which was suspended. More...
 
static int client_receive_mst_cb (void *cls, const struct GNUNET_MessageHeader *message)
 Callback for message stream tokenizer. More...
 
static size_t client_receive_put (void *stream, size_t size, size_t nmemb, void *cls)
 Callback method used with libcurl when data for a PUT request are received. More...
 
static size_t client_receive (void *stream, size_t size, size_t nmemb, void *cls)
 Callback method used with libcurl when data for a GET request are received. More...
 
static int client_connect (struct GNUNET_ATS_Session *s)
 Connect both PUT and GET request for a session. More...
 
static enum GNUNET_NetworkType http_client_plugin_get_network (void *cls, struct GNUNET_ATS_Session *session)
 Function obtain the network type for a session. More...
 
static enum GNUNET_NetworkType http_client_plugin_get_network_for_address (void *cls, const struct GNUNET_HELLO_Address *address)
 Function obtain the network type for an address. More...
 
static void client_session_timeout (void *cls)
 Session was idle, so disconnect it. More...
 
static struct GNUNET_ATS_Sessionhttp_client_plugin_get_session (void *cls, const struct GNUNET_HELLO_Address *address)
 Creates a new outbound session the transport service will use to send data to the peer. More...
 
static int client_start (struct HTTP_Client_Plugin *plugin)
 Setup http_client plugin. More...
 
static int http_client_plugin_address_suggested (void *cls, const void *addr, size_t addrlen)
 Another peer has suggested an address for this peer and transport plugin. More...
 
void * libgnunet_plugin_transport_http_client_done (void *cls)
 Exit point from the plugin. More...
 
static int client_configure_plugin (struct HTTP_Client_Plugin *plugin)
 Configure plugin. More...
 
static const char * http_client_plugin_address_to_string (void *cls, const void *addr, size_t addrlen)
 Function to convert an address to a human-readable string. More...
 
static void http_client_plugin_update_session_timeout (void *cls, const struct GNUNET_PeerIdentity *peer, struct GNUNET_ATS_Session *session)
 Function that will be called whenever the transport service wants to notify the plugin that a session is still active and in use and therefore the session timeout for this session has to be updated. More...
 
static void http_client_plugin_update_inbound_delay (void *cls, const struct GNUNET_PeerIdentity *peer, struct GNUNET_ATS_Session *s, struct GNUNET_TIME_Relative delay)
 Function that will be called whenever the transport service wants to notify the plugin that the inbound quota changed and that the plugin should update it's delay for the next receive value. More...
 
static int send_session_info_iter (void *cls, const struct GNUNET_PeerIdentity *peer, void *value)
 Return information about the given session to the monitor callback. More...
 
static void http_client_plugin_setup_monitor (void *cls, GNUNET_TRANSPORT_SessionInfoCallback sic, void *sic_cls)
 Begin monitoring sessions of a plugin. More...
 
void * libgnunet_plugin_transport_http_client_init (void *cls)
 Entry point for the plugin. More...
 

Detailed Description

HTTP/S client transport plugin.

Author
Matthias Wachs
Christian Grothoff

Definition in file plugin_transport_http_client.c.

Macro Definition Documentation

◆ PLUGIN_NAME

#define PLUGIN_NAME   "http_client"

◆ HTTP_STAT_STR_CONNECTIONS

#define HTTP_STAT_STR_CONNECTIONS   "# HTTP client connections"

◆ LIBGNUNET_PLUGIN_TRANSPORT_INIT

#define LIBGNUNET_PLUGIN_TRANSPORT_INIT   libgnunet_plugin_transport_http_client_init

Definition at line 38 of file plugin_transport_http_client.c.

◆ LIBGNUNET_PLUGIN_TRANSPORT_DONE

#define LIBGNUNET_PLUGIN_TRANSPORT_DONE   libgnunet_plugin_transport_http_client_done

◆ VERBOSE_CURL

#define VERBOSE_CURL   GNUNET_NO

Definition at line 44 of file plugin_transport_http_client.c.

◆ PUT_DISCONNECT_TIMEOUT

#define PUT_DISCONNECT_TIMEOUT
Value:
#define GNUNET_TIME_UNIT_SECONDS
One second.
struct GNUNET_TIME_Relative GNUNET_TIME_relative_multiply(struct GNUNET_TIME_Relative rel, unsigned long long factor)
Multiply relative time by a given factor.
Definition: time.c:311

Definition at line 46 of file plugin_transport_http_client.c.

Referenced by client_send_cb().

◆ ENABLE_PUT

#define ENABLE_PUT   GNUNET_YES

Definition at line 49 of file plugin_transport_http_client.c.

◆ ENABLE_GET

#define ENABLE_GET   GNUNET_YES

Definition at line 50 of file plugin_transport_http_client.c.

◆ LOG

#define LOG (   kind,
  ... 
)    GNUNET_log_from (kind, PLUGIN_NAME, __VA_ARGS__)

Enumeration Type Documentation

◆ HTTP_PUT_REQUEST_STATE

State of a HTTP PUT request.

Enumerator
H_NOT_CONNECTED 

Just created, not yet connected.

H_CONNECTED 

Connected.

H_PAUSED 

Paused, nothing to send.

H_TMP_DISCONNECTING 

Temporary disconnect in progress due to inactivity.

H_TMP_RECONNECT_REQUIRED 

Send request while temporary disconnect, reconnect.

H_TMP_DISCONNECTED 

Temporarily disconnected.

H_DISCONNECTED 

Disconnected.

Definition at line 71 of file plugin_transport_http_client.c.

72 {
77 
82 
86  H_PAUSED,
87 
92 
97 
102 
107 };
Paused, nothing to send.
Temporarily disconnected.
Just created, not yet connected.
Temporary disconnect in progress due to inactivity.
Send request while temporary disconnect, reconnect.

Function Documentation

◆ http_client_plugin_session_disconnect()

static int http_client_plugin_session_disconnect ( void *  cls,
struct GNUNET_ATS_Session s 
)
static

Disconnect a session.

Parameters
clsthe struct HTTP_Client_Plugin *
ssession
Returns
GNUNET_OK on success, GNUNET_SYSERR on error

Definition at line 850 of file plugin_transport_http_client.c.

References GNUNET_ATS_Session::address, client_delete_session(), HTTP_Client_Plugin::client_perform_task, client_schedule(), GNUNET_TRANSPORT_PluginEnvironment::cls, HTTP_Client_Plugin::env, GNUNET_ERROR_TYPE_DEBUG, GNUNET_OK, GNUNET_SCHEDULER_cancel(), GNUNET_YES, LOG, plugin, and GNUNET_TRANSPORT_PluginEnvironment::session_end.

Referenced by client_run(), client_session_timeout(), destroy_session_cb(), http_client_plugin_send(), and libgnunet_plugin_transport_http_client_init().

852 {
853  struct HTTP_Client_Plugin *plugin = cls;
854 
856  "Session %p: notifying transport about ending session\n",
857  s);
858  plugin->env->session_end (plugin->env->cls,
859  s->address,
860  s);
862 
863  /* Re-schedule since handles have changed */
864  if (NULL != plugin->client_perform_task)
865  {
867  plugin->client_perform_task = NULL;
868  }
869  client_schedule (plugin, GNUNET_YES);
870 
871  return GNUNET_OK;
872 }
struct GNUNET_HELLO_Address * address
Address.
struct GNUNET_TRANSPORT_PluginEnvironment * env
Our environment.
GNUNET_TRANSPORT_SessionEnd session_end
Function that must be called by the plugin when a non-NULL session handle stops being valid (is destr...
void * cls
Closure for the various callbacks.
static int client_schedule(struct HTTP_Client_Plugin *plugin, int now)
Function setting up file descriptors and scheduling task to run.
Encapsulation of all of the state of the plugin.
struct GNUNET_SCHEDULER_Task * client_perform_task
curl perform task
struct Plugin * plugin
#define LOG(kind,...)
static void client_delete_session(struct GNUNET_ATS_Session *s)
Delete session s.
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:972
Here is the call graph for this function:
Here is the caller graph for this function:

◆ notify_session_monitor()

static void notify_session_monitor ( struct HTTP_Client_Plugin plugin,
struct GNUNET_ATS_Session session,
enum GNUNET_TRANSPORT_SessionState  state 
)
static

If a session monitor is attached, notify it about the new session state.

Parameters
pluginour plugin
sessionsession that changed state
statenew state of the session

Definition at line 413 of file plugin_transport_http_client.c.

References GNUNET_ATS_Session::address, GNUNET_TRANSPORT_SessionInfo::address, GNUNET_ATS_Session::bytes_in_queue, GNUNET_NO, GNUNET_TRANSPORT_SessionInfo::is_inbound, GNUNET_ATS_Session::msgs_in_queue, GNUNET_ATS_Session::next_receive, GNUNET_TRANSPORT_SessionInfo::num_bytes_pending, GNUNET_TRANSPORT_SessionInfo::num_msg_pending, GNUNET_TRANSPORT_SessionInfo::receive_delay, GNUNET_TRANSPORT_SessionInfo::session_timeout, HTTP_Client_Plugin::sic, HTTP_Client_Plugin::sic_cls, state, GNUNET_TRANSPORT_SessionInfo::state, and GNUNET_ATS_Session::timeout.

Referenced by client_delete_session(), client_send_cb(), client_session_timeout(), http_client_plugin_get_session(), http_client_plugin_send(), send_session_info_iter(), and template_plugin_update_session_timeout().

416 {
417  struct GNUNET_TRANSPORT_SessionInfo info;
418 
419  if (NULL == plugin->sic)
420  return;
421  memset (&info, 0, sizeof(info));
422  info.state = state;
423  info.is_inbound = GNUNET_NO;
424  info.num_msg_pending = session->msgs_in_queue;
425  info.num_bytes_pending = session->bytes_in_queue;
426  info.receive_delay = session->next_receive;
427  info.session_timeout = session->timeout;
428  info.address = session->address;
429  plugin->sic (plugin->sic_cls,
430  session,
431  &info);
432 }
unsigned int msgs_in_queue
Number of messages waiting for transmission to this peer.
struct GNUNET_TIME_Absolute timeout
When does this session time out.
struct GNUNET_HELLO_Address * address
Address.
unsigned long long bytes_in_queue
Number of bytes waiting for transmission to this peer.
struct GNUNET_TIME_Absolute next_receive
Absolute time when to receive data again Used for receive throttling.
Information about a plugin's session.
enum State state
current state of profiling
GNUNET_TRANSPORT_SessionInfoCallback sic
Function to call about session status changes.
void * sic_cls
Closure for sic.
Here is the caller graph for this function:

◆ client_delete_session()

static void client_delete_session ( struct GNUNET_ATS_Session s)
static

Delete session s.

Parameters
sthe session to delete

Definition at line 441 of file plugin_transport_http_client.c.

References GNUNET_ATS_Session::address, GNUNET_ATS_Session::bytes_in_queue, HTTP_Client_Plugin::cur_requests, HTTP_Client_Plugin::curl_multi_handle, RequestHandle::easyhandle, HTTP_Client_Plugin::env, GNUNET_ATS_Session::get, GNUNET_assert, GNUNET_break, GNUNET_CONTAINER_DLL_remove, GNUNET_CONTAINER_multipeermap_remove(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_free, GNUNET_HELLO_address_free, GNUNET_i2s(), GNUNET_MST_destroy(), GNUNET_NO, GNUNET_OK, GNUNET_SCHEDULER_cancel(), GNUNET_STATISTICS_set(), GNUNET_SYSERR, GNUNET_TIME_UNIT_ZERO_ABS, GNUNET_TRANSPORT_SS_DONE, HTTP_STAT_STR_CONNECTIONS, LOG, GNUNET_ATS_Session::msg_head, GNUNET_ATS_Session::msg_tail, GNUNET_ATS_Session::msg_tk, GNUNET_ATS_Session::msgs_in_queue, HTTP_Message::next, notify_session_monitor(), GNUNET_ATS_Session::overhead, GNUNET_HELLO_Address::peer, plugin, GNUNET_ATS_Session::plugin, HTTP_Message::pos, GNUNET_ATS_Session::put, GNUNET_ATS_Session::put_disconnect_task, GNUNET_ATS_Session::recv_wakeup_task, HTTP_Client_Plugin::sessions, HTTP_Message::size, GNUNET_TRANSPORT_PluginEnvironment::stats, GNUNET_ATS_Session::timeout, GNUNET_ATS_Session::timeout_task, HTTP_Message::transmit_cont, HTTP_Message::transmit_cont_cls, and GNUNET_ATS_Session::url.

Referenced by http_client_plugin_get_session(), and http_client_plugin_session_disconnect().

442 {
443  struct HTTP_Client_Plugin *plugin = s->plugin;
444  struct HTTP_Message *pos;
445  struct HTTP_Message *next;
446  CURLMcode mret;
447 
448  if (NULL != s->timeout_task)
449  {
451  s->timeout_task = NULL;
453  }
454  if (NULL != s->put_disconnect_task)
455  {
457  s->put_disconnect_task = NULL;
458  }
459  if (NULL != s->recv_wakeup_task)
460  {
462  s->recv_wakeup_task = NULL;
463  }
466  &s->address->peer,
467  s));
468  if (NULL != s->put.easyhandle)
469  {
471  "Session %p/request %p: disconnecting PUT request to peer `%s'\n",
472  s,
473  s->put.easyhandle,
474  GNUNET_i2s (&s->address->peer));
475 
476  /* remove curl handle from multi handle */
477  mret = curl_multi_remove_handle (plugin->curl_multi_handle,
478  s->put.easyhandle);
479  GNUNET_break (CURLM_OK == mret);
480  curl_easy_cleanup (s->put.easyhandle);
481  GNUNET_assert (plugin->cur_requests > 0);
482  plugin->cur_requests--;
483  s->put.easyhandle = NULL;
484  }
485  if (NULL != s->get.easyhandle)
486  {
488  "Session %p/request %p: disconnecting GET request to peer `%s'\n",
489  s, s->get.easyhandle,
490  GNUNET_i2s (&s->address->peer));
491  /* remove curl handle from multi handle */
492  mret = curl_multi_remove_handle (plugin->curl_multi_handle,
493  s->get.easyhandle);
494  GNUNET_break (CURLM_OK == mret);
495  curl_easy_cleanup (s->get.easyhandle);
496  GNUNET_assert (plugin->cur_requests > 0);
497  plugin->cur_requests--;
498  s->get.easyhandle = NULL;
499  }
500 
501  GNUNET_STATISTICS_set (plugin->env->stats,
503  plugin->cur_requests,
504  GNUNET_NO);
505  next = s->msg_head;
506  while (NULL != (pos = next))
507  {
508  next = pos->next;
510  s->msg_tail,
511  pos);
512  GNUNET_assert (0 < s->msgs_in_queue);
513  s->msgs_in_queue--;
514  GNUNET_assert (pos->size <= s->bytes_in_queue);
515  s->bytes_in_queue -= pos->size;
516  if (NULL != pos->transmit_cont)
517  pos->transmit_cont (pos->transmit_cont_cls,
518  &s->address->peer,
520  pos->size,
521  pos->pos + s->overhead);
522  s->overhead = 0;
523  GNUNET_free (pos);
524  }
525  GNUNET_assert (0 == s->msgs_in_queue);
526  GNUNET_assert (0 == s->bytes_in_queue);
527  notify_session_monitor (plugin,
528  s,
530  if (NULL != s->msg_tk)
531  {
533  s->msg_tk = NULL;
534  }
536  GNUNET_free (s->url);
537  GNUNET_free (s);
538 }
#define GNUNET_CONTAINER_DLL_remove(head, tail, element)
Remove an element from a DLL.
Session is being torn down and about to disappear.
#define GNUNET_TIME_UNIT_ZERO_ABS
Absolute time zero.
struct GNUNET_SCHEDULER_Task * recv_wakeup_task
Task to wake up client receive handle when receiving is allowed again.
unsigned int msgs_in_queue
Number of messages waiting for transmission to this peer.
struct GNUNET_SCHEDULER_Task * timeout_task
Session timeout task.
struct HTTP_Message * msg_tail
previous pointer for double linked list
struct Plugin * plugin
Pointer to the global plugin struct.
size_t pos
amount of data already sent
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
struct RequestHandle put
Handle for the HTTP PUT request.
Message to send using http.
struct GNUNET_SERVER_MessageStreamTokenizer * msg_tk
Message stream tokenizer for incoming data.
struct HTTP_Message * next
next pointer for double linked list
struct GNUNET_TIME_Absolute timeout
When does this session time out.
int GNUNET_CONTAINER_multipeermap_remove(struct GNUNET_CONTAINER_MultiPeerMap *map, const struct GNUNET_PeerIdentity *key, const void *value)
Remove the given key-value pair from the map.
struct GNUNET_HELLO_Address * address
Address.
struct GNUNET_TRANSPORT_PluginEnvironment * env
Our environment.
struct RequestHandle get
Handle for the HTTP GET request.
struct HTTP_Message * msg_head
next pointer for double linked list
struct GNUNET_SCHEDULER_Task * put_disconnect_task
Session timeout task.
unsigned long long bytes_in_queue
Number of bytes waiting for transmission to this peer.
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
void * transmit_cont_cls
Closure for transmit_cont.
GNUNET_TRANSPORT_TransmitContinuation transmit_cont
Continuation function to call once the transmission buffer has again space available.
static void notify_session_monitor(struct HTTP_Client_Plugin *plugin, struct GNUNET_ATS_Session *session, enum GNUNET_TRANSPORT_SessionState state)
If a session monitor is attached, notify it about the new session state.
void GNUNET_MST_destroy(struct GNUNET_MessageStreamTokenizer *mst)
Destroys a tokenizer.
Definition: mst.c:411
void GNUNET_STATISTICS_set(struct GNUNET_STATISTICS_Handle *handle, const char *name, uint64_t value, int make_persistent)
Set statistic value for the peer.
size_t size
buffer length
struct GNUNET_CONTAINER_MultiPeerMap * sessions
Open sessions.
char * url
The URL to connect to.
struct GNUNET_PeerIdentity peer
For which peer is this an address?
Encapsulation of all of the state of the plugin.
unsigned int cur_requests
Current number of sockets the plugin can use Each http connections are two requests.
#define HTTP_STAT_STR_CONNECTIONS
CURLM * curl_multi_handle
cURL Multihandle
struct GNUNET_STATISTICS_Handle * stats
Handle for reporting statistics.
struct Plugin * plugin
size_t overhead
Outbound overhead due to HTTP connection Add to next message of this session when calling callback...
#define LOG(kind,...)
CURL * easyhandle
The curl easy handle.
const char * GNUNET_i2s(const struct GNUNET_PeerIdentity *pid)
Convert a peer identity to a string (for printing debug messages).
#define GNUNET_HELLO_address_free(addr)
Free an address.
#define GNUNET_free(ptr)
Wrapper around free.
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:972
Here is the call graph for this function:
Here is the caller graph for this function:

◆ client_reschedule_session_timeout()

static void client_reschedule_session_timeout ( struct GNUNET_ATS_Session s)
static

Increment session timeout due to activity for session s.

Parameters
sthe session

Definition at line 547 of file plugin_transport_http_client.c.

References client_run(), GNUNET_assert, GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT, GNUNET_TIME_relative_to_absolute(), GNUNET_ATS_Session::timeout, and GNUNET_ATS_Session::timeout_task.

Referenced by client_receive_mst_cb(), and http_client_plugin_update_session_timeout().

548 {
549  GNUNET_assert (NULL != s->timeout_task);
552 }
struct GNUNET_SCHEDULER_Task * timeout_task
Session timeout task.
struct GNUNET_TIME_Absolute GNUNET_TIME_relative_to_absolute(struct GNUNET_TIME_Relative rel)
Convert relative time to an absolute time in the future.
Definition: time.c:181
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
struct GNUNET_TIME_Absolute timeout
When does this session time out.
#define GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT
After how long do we consider a connection to a peer dead if we don&#39;t receive messages from the peer...
Here is the call graph for this function:
Here is the caller graph for this function:

◆ client_run()

static void client_run ( void *  cls)
static

Task performing curl operations.

Parameters
clsplugin as closure
tcgnunet scheduler task context
clsplugin as closure

Definition at line 1298 of file plugin_transport_http_client.c.

References _, GNUNET_ATS_Session::address, address, client_connect_get(), client_connect_put(), HTTP_Client_Plugin::client_perform_task, client_schedule(), HTTP_Client_Plugin::cur_requests, HTTP_Client_Plugin::curl_multi_handle, RequestHandle::easyhandle, HTTP_Client_Plugin::emulate_xhr, HTTP_Client_Plugin::env, GNUNET_ATS_Session::get, GNUNET_assert, GNUNET_break, GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_ERROR, GNUNET_ERROR_TYPE_INFO, GNUNET_i2s(), GNUNET_log, GNUNET_NO, GNUNET_STATISTICS_set(), GNUNET_SYSERR, GNUNET_YES, H_CONNECTED, H_DISCONNECTED, H_NOT_CONNECTED, H_PAUSED, H_TMP_DISCONNECTED, H_TMP_DISCONNECTING, H_TMP_RECONNECT_REQUIRED, http_client_plugin_session_disconnect(), HTTP_STAT_STR_CONNECTIONS, LOG, msg, GNUNET_HELLO_Address::peer, plugin, GNUNET_ATS_Session::put, ret, RequestHandle::s, RequestHandle::state, GNUNET_TRANSPORT_PluginEnvironment::stats, and GNUNET_ATS_Session::url.

Referenced by client_connect(), client_reschedule_session_timeout(), and client_schedule().

1299 {
1300  struct HTTP_Client_Plugin *plugin = cls;
1301  int running;
1302  long http_statuscode;
1303  CURLMcode mret;
1304  CURLMsg *msg;
1305  int put_request; /* GNUNET_YES if easy handle is put, GNUNET_NO for get */
1306  int msgs_left;
1307 
1308  plugin->client_perform_task = NULL;
1309  /* While data are available or timeouts occurred */
1310  do
1311  {
1312  running = 0;
1313  /* Perform operations for all handles */
1314  mret = curl_multi_perform (plugin->curl_multi_handle, &running);
1315 
1316  /* Get additional information for all handles */
1317  while (NULL != (msg = curl_multi_info_read (plugin->curl_multi_handle,
1318  &msgs_left)))
1319  {
1320  CURL *easy_h = msg->easy_handle;
1321  struct GNUNET_ATS_Session *s = NULL;
1322  char *d = NULL; /* curl requires 'd' to be a 'char *' */
1323 
1324  GNUNET_assert (NULL != easy_h);
1325 
1326  /* Obtain session from easy handle */
1327  GNUNET_assert (CURLE_OK == curl_easy_getinfo (easy_h, CURLINFO_PRIVATE,
1328  &d));
1329  s = (struct GNUNET_ATS_Session *) d;
1330  GNUNET_assert (NULL != s);
1331 
1332  if (msg->msg != CURLMSG_DONE)
1333  continue; /* This should not happen */
1334 
1335  /* Get HTTP response code */
1336  GNUNET_break (CURLE_OK == curl_easy_getinfo (easy_h,
1337  CURLINFO_RESPONSE_CODE,
1338  &http_statuscode));
1339 
1340  if (easy_h == s->put.easyhandle)
1341  put_request = GNUNET_YES;
1342  else
1343  put_request = GNUNET_NO;
1344 
1345  /* Log status of terminated request */
1346  if ((0 != msg->data.result) || (http_statuscode != 200))
1348  "Session %p/request %p: %s request to `%s' ended with status %li reason %i: `%s'\n",
1349  s, msg->easy_handle,
1350  (GNUNET_YES == put_request) ? "PUT" : "GET",
1351  GNUNET_i2s (&s->address->peer),
1352  http_statuscode,
1353  msg->data.result,
1354  curl_easy_strerror (msg->data.result));
1355  else
1357  "Session %p/request %p: %s request to `%s' ended normal\n",
1358  s, msg->easy_handle,
1359  (GNUNET_YES == put_request) ? "PUT" : "GET",
1360  GNUNET_i2s (&s->address->peer));
1361 
1362  /* Remove easy handle from multi handle */
1363  curl_multi_remove_handle (plugin->curl_multi_handle, easy_h);
1364 
1365  /* Clean up easy handle */
1366  curl_easy_cleanup (easy_h);
1367 
1368  /* Remove information */
1369  GNUNET_assert (plugin->cur_requests > 0);
1370  plugin->cur_requests--;
1372  "%s request to %s done, number of requests decreased to %u\n",
1373  (GNUNET_YES == put_request) ? "PUT" : "GET",
1374  s->url,
1375  plugin->cur_requests);
1376 
1377  if (GNUNET_YES == put_request)
1378  {
1379  /* Clean up a PUT request */
1380  s->put.easyhandle = NULL;
1381  s->put.s = NULL;
1382 
1383  switch (s->put.state)
1384  {
1385  case H_NOT_CONNECTED:
1386  case H_DISCONNECTED:
1387  case H_TMP_DISCONNECTED:
1388  /* This must not happen */
1389  GNUNET_break (0);
1390  break;
1391 
1393  /* Transport called send while disconnect in progress, reconnect */
1394  if (GNUNET_SYSERR == client_connect_put (s))
1395  {
1396  /* Reconnect failed, disconnect session */
1398  }
1399  break;
1400 
1401  case H_TMP_DISCONNECTING:
1402  /* PUT gets temporarily disconnected */
1404  break;
1405 
1406  case H_PAUSED:
1407  case H_CONNECTED:
1408  /* PUT gets permanently disconnected */
1409  s->put.state = H_DISCONNECTED;
1411  break;
1412 
1413  default:
1414  GNUNET_break (0);
1415  break;
1416  }
1417  }
1418  else if (GNUNET_NO == put_request)
1419  {
1420  /* Clean up a GET request */
1421  s->get.easyhandle = NULL;
1422  s->get.s = NULL;
1423 
1424  /* If we are emulating an XHR client we need to make another GET
1425  * request.
1426  */
1427  if (GNUNET_YES == plugin->emulate_xhr)
1428  {
1429  if (GNUNET_SYSERR == client_connect_get (s))
1431  }
1432  else
1433  {
1434  /* GET request was terminated, so disconnect session */
1436  }
1437  }
1438  else
1439  GNUNET_break (0); /* Must not happen */
1440 
1441  GNUNET_STATISTICS_set (plugin->env->stats,
1443  plugin->cur_requests,
1444  GNUNET_NO);
1445  }
1446  }
1447  while (mret == CURLM_CALL_MULTI_PERFORM);
1448  client_schedule (plugin, GNUNET_NO);
1449 }
struct GNUNET_MessageHeader * msg
Definition: 005.c:2
static int http_client_plugin_session_disconnect(void *cls, struct GNUNET_ATS_Session *s)
Disconnect a session.
static int client_connect_get(struct GNUNET_ATS_Session *s)
Connect GET request.
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
struct RequestHandle put
Handle for the HTTP PUT request.
struct GNUNET_HELLO_Address * address
Address.
struct GNUNET_TRANSPORT_PluginEnvironment * env
Our environment.
struct RequestHandle get
Handle for the HTTP GET request.
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
Paused, nothing to send.
Temporarily disconnected.
static int client_schedule(struct HTTP_Client_Plugin *plugin, int now)
Function setting up file descriptors and scheduling task to run.
Session handle for connections.
void GNUNET_STATISTICS_set(struct GNUNET_STATISTICS_Handle *handle, const char *name, uint64_t value, int make_persistent)
Set statistic value for the peer.
static int client_connect_put(struct GNUNET_ATS_Session *s)
Connect a HTTP put request.
char * url
The URL to connect to.
int emulate_xhr
Should we emulate an XHR client for testing?
struct GNUNET_PeerIdentity peer
For which peer is this an address?
Just created, not yet connected.
Encapsulation of all of the state of the plugin.
struct GNUNET_SCHEDULER_Task * client_perform_task
curl perform task
unsigned int cur_requests
Current number of sockets the plugin can use Each http connections are two requests.
#define HTTP_STAT_STR_CONNECTIONS
CURLM * curl_multi_handle
cURL Multihandle
struct GNUNET_STATISTICS_Handle * stats
Handle for reporting statistics.
struct Plugin * plugin
#define LOG(kind,...)
enum HTTP_PUT_REQUEST_STATE state
Current state of this request.
Temporary disconnect in progress due to inactivity.
struct GNUNET_ATS_Session * s
The related session.
CURL * easyhandle
The curl easy handle.
const char * GNUNET_i2s(const struct GNUNET_PeerIdentity *pid)
Convert a peer identity to a string (for printing debug messages).
Send request while temporary disconnect, reconnect.
Here is the call graph for this function:
Here is the caller graph for this function:

◆ client_schedule()

static int client_schedule ( struct HTTP_Client_Plugin plugin,
int  now 
)
static

Function setting up file descriptors and scheduling task to run.

Parameters
pluginthe plugin as closure
nowschedule task in 1ms, regardless of what curl may say
Returns
GNUNET_SYSERR for hard failure, GNUNET_OK for ok

Definition at line 573 of file plugin_transport_http_client.c.

References _, ch, client_connect_get(), client_connect_put(), HTTP_Client_Plugin::client_perform_task, client_run(), curl, HTTP_Client_Plugin::curl_multi_handle, data, RequestHandle::easyhandle, GNUNET_assert, GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_ERROR, GNUNET_memcpy, GNUNET_NETWORK_fdset_copy_native(), GNUNET_NETWORK_fdset_create(), GNUNET_NETWORK_fdset_destroy(), GNUNET_OK, GNUNET_SCHEDULER_add_select(), GNUNET_SCHEDULER_cancel(), GNUNET_SCHEDULER_PRIORITY_DEFAULT, GNUNET_SYSERR, GNUNET_TIME_relative_multiply(), GNUNET_TIME_UNIT_MILLISECONDS, GNUNET_TIME_UNIT_SECONDS, GNUNET_YES, LOG, max, GNUNET_ATS_Session::overhead, RequestHandle::s, HTTP_Message::size, and type.

Referenced by client_put_disconnect(), client_run(), http_client_plugin_send(), and http_client_plugin_session_disconnect().

575 {
576  fd_set rs;
577  fd_set ws;
578  fd_set es;
579  int max;
580  struct GNUNET_NETWORK_FDSet *grs;
581  struct GNUNET_NETWORK_FDSet *gws;
582  long to;
583  CURLMcode mret;
585 
586  /* Cancel previous scheduled task */
587  if (plugin->client_perform_task != NULL)
588  {
590  plugin->client_perform_task = NULL;
591  }
592  max = -1;
593  FD_ZERO (&rs);
594  FD_ZERO (&ws);
595  FD_ZERO (&es);
596  mret = curl_multi_fdset (plugin->curl_multi_handle, &rs, &ws, &es, &max);
597  if (mret != CURLM_OK)
598  {
600  _ ("%s failed at %s:%d: `%s'\n"),
601  "curl_multi_fdset",
602  __FILE__,
603  __LINE__,
604  curl_multi_strerror (mret));
605  return GNUNET_SYSERR;
606  }
607  mret = curl_multi_timeout (plugin->curl_multi_handle, &to);
608  if (-1 == to)
610  else
612  if (now == GNUNET_YES)
614 
615  if (CURLM_OK != mret)
616  {
618  _ ("%s failed at %s:%d: `%s'\n"),
619  "curl_multi_timeout", __FILE__, __LINE__,
620  curl_multi_strerror (mret));
621  return GNUNET_SYSERR;
622  }
623 
626  GNUNET_NETWORK_fdset_copy_native (grs, &rs, max + 1);
627  GNUNET_NETWORK_fdset_copy_native (gws, &ws, max + 1);
628 
629  /* Schedule task to run when select is ready to read or write */
630  plugin->client_perform_task =
632  timeout, grs, gws,
633  &client_run, plugin);
636  return GNUNET_OK;
637 }
#define GNUNET_TIME_UNIT_SECONDS
One second.
static void client_run(void *cls)
Task performing curl operations.
void GNUNET_NETWORK_fdset_copy_native(struct GNUNET_NETWORK_FDSet *to, const fd_set *from, int nfds)
Copy a native fd set into the GNUnet representation.
Definition: network.c:1117
#define _(String)
GNU gettext support macro.
Definition: platform.h:178
#define max(x, y)
void GNUNET_NETWORK_fdset_destroy(struct GNUNET_NETWORK_FDSet *fds)
Releases the associated memory of an fd set.
Definition: network.c:1263
struct GNUNET_NETWORK_FDSet * GNUNET_NETWORK_fdset_create(void)
Creates an fd set.
Definition: network.c:1247
static struct GNUNET_TIME_Relative timeout
Desired timeout for the lookup (default is no timeout).
Definition: gnunet-abd.c:61
collection of IO descriptors
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_select(enum GNUNET_SCHEDULER_Priority prio, struct GNUNET_TIME_Relative delay, const struct GNUNET_NETWORK_FDSet *rs, const struct GNUNET_NETWORK_FDSet *ws, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay or when any of the specified file descriptor set...
Definition: scheduler.c:1841
struct GNUNET_TIME_Relative GNUNET_TIME_relative_multiply(struct GNUNET_TIME_Relative rel, unsigned long long factor)
Multiply relative time by a given factor.
Definition: time.c:311
#define GNUNET_TIME_UNIT_MILLISECONDS
One millisecond.
struct GNUNET_SCHEDULER_Task * client_perform_task
curl perform task
CURLM * curl_multi_handle
cURL Multihandle
#define LOG(kind,...)
Run with the default priority (normal P2P operations).
Time for relative time used by GNUnet, in microseconds.
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:972
Here is the call graph for this function:
Here is the caller graph for this function:

◆ client_connect_get()

static int client_connect_get ( struct GNUNET_ATS_Session s)
static

Connect GET request.

Connect GET request for a session.

Parameters
sthe session to connect
Returns
GNUNET_OK on success, GNUNET_SYSERR otherwise

Definition at line 1520 of file plugin_transport_http_client.c.

References GNUNET_HELLO_Address::address, GNUNET_ATS_Session::address, client_receive(), client_send_cb(), RequestHandle::easyhandle, GNUNET_ATS_Session::get, GNUNET_asprintf(), GNUNET_break, GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_ERROR, GNUNET_ERROR_TYPE_INFO, GNUNET_free, GNUNET_log, GNUNET_MAX_MESSAGE_SIZE, GNUNET_OK, GNUNET_SYSERR, GNUNET_YES, HTTP_CLIENT_NOT_VALIDATED_TIMEOUT, HTTP_OPTIONS_TCP_STEALTH, HTTP_OPTIONS_VERIFY_CERTIFICATE, LOG, options, HttpAddress::options, GNUNET_ATS_Session::plugin, RequestHandle::s, and GNUNET_ATS_Session::url.

Referenced by client_connect(), client_run(), and client_schedule().

1521 {
1522  CURLMcode mret;
1523  struct HttpAddress *ha;
1524  uint32_t options;
1525 
1526  ha = (struct HttpAddress *) s->address->address;
1527  options = ntohl (ha->options);
1528  /* create get request */
1529  s->get.easyhandle = curl_easy_init ();
1530  s->get.s = s;
1531  if (0 != (options & HTTP_OPTIONS_TCP_STEALTH))
1532  {
1533 #ifdef TCP_STEALTH
1534  curl_easy_setopt (s->get.easyhandle,
1535  CURLOPT_OPENSOCKETFUNCTION,
1536  &open_tcp_stealth_socket_cb);
1537  curl_easy_setopt (s->get.easyhandle,
1538  CURLOPT_OPENSOCKETDATA,
1539  s);
1540 #else
1542  "Cannot connect, TCP STEALTH needed and not supported by kernel.\n");
1543  curl_easy_cleanup (s->get.easyhandle);
1544  s->get.easyhandle = NULL;
1545  s->get.s = NULL;
1546  return GNUNET_SYSERR;
1547 #endif
1548  }
1549 
1550 #if VERBOSE_CURL
1551  curl_easy_setopt (s->get.easyhandle,
1552  CURLOPT_VERBOSE,
1553  1L);
1554  curl_easy_setopt (s->get.easyhandle,
1555  CURLOPT_DEBUGFUNCTION,
1556  &client_log);
1557  curl_easy_setopt (s->get.easyhandle,
1558  CURLOPT_DEBUGDATA,
1559  &s->get);
1560 #endif
1561 #if BUILD_HTTPS
1562  curl_easy_setopt (s->get.easyhandle, CURLOPT_SSLVERSION,
1563  CURL_SSLVERSION_TLSv1);
1564  {
1566  (options & HTTP_OPTIONS_VERIFY_CERTIFICATE))
1567  {
1568  curl_easy_setopt (s->get.easyhandle,
1569  CURLOPT_SSL_VERIFYPEER, 1L);
1570  curl_easy_setopt (s->get.easyhandle,
1571  CURLOPT_SSL_VERIFYHOST,
1572  2L);
1573  }
1574  else
1575  {
1576  curl_easy_setopt (s->get.easyhandle,
1577  CURLOPT_SSL_VERIFYPEER,
1578  0L);
1579  curl_easy_setopt (s->get.easyhandle,
1580  CURLOPT_SSL_VERIFYHOST,
1581  0L);
1582  }
1583  }
1584  curl_easy_setopt (s->get.easyhandle,
1585  CURLOPT_PROTOCOLS,
1586  CURLPROTO_HTTPS);
1587  curl_easy_setopt (s->get.easyhandle,
1588  CURLOPT_REDIR_PROTOCOLS,
1589  CURLPROTO_HTTPS);
1590 #else
1591  curl_easy_setopt (s->get.easyhandle,
1592  CURLOPT_PROTOCOLS,
1593  CURLPROTO_HTTP);
1594  curl_easy_setopt (s->get.easyhandle,
1595  CURLOPT_REDIR_PROTOCOLS,
1596  CURLPROTO_HTTP);
1597 #endif
1598 
1599  if (NULL != s->plugin->proxy_hostname)
1600  {
1601  curl_easy_setopt (s->get.easyhandle,
1602  CURLOPT_PROXY,
1603  s->plugin->proxy_hostname);
1604  curl_easy_setopt (s->get.easyhandle,
1605  CURLOPT_PROXYTYPE,
1606  s->plugin->proxytype);
1607  if (NULL != s->plugin->proxy_username)
1608  curl_easy_setopt (s->get.easyhandle,
1609  CURLOPT_PROXYUSERNAME,
1610  s->plugin->proxy_username);
1611  if (NULL != s->plugin->proxy_password)
1612  curl_easy_setopt (s->get.easyhandle,
1613  CURLOPT_PROXYPASSWORD,
1614  s->plugin->proxy_password);
1615  if (GNUNET_YES == s->plugin->proxy_use_httpproxytunnel)
1616  curl_easy_setopt (s->get.easyhandle,
1617  CURLOPT_HTTPPROXYTUNNEL,
1618  s->plugin->proxy_use_httpproxytunnel);
1619  }
1620 
1621  if (GNUNET_YES == s->plugin->emulate_xhr)
1622  {
1623  char *url;
1624 
1625  GNUNET_asprintf (&url,
1626  "%s,1",
1627  s->url);
1628  curl_easy_setopt (s->get.easyhandle,
1629  CURLOPT_URL,
1630  url);
1631  GNUNET_free (url);
1632  }
1633  else
1634  {
1635  curl_easy_setopt (s->get.easyhandle,
1636  CURLOPT_URL,
1637  s->url);
1638  }
1639  curl_easy_setopt (s->get.easyhandle,
1640  CURLOPT_READFUNCTION,
1641  &client_send_cb);
1642  curl_easy_setopt (s->get.easyhandle,
1643  CURLOPT_READDATA,
1644  s);
1645  curl_easy_setopt (s->get.easyhandle,
1646  CURLOPT_WRITEFUNCTION,
1647  &client_receive);
1648  curl_easy_setopt (s->get.easyhandle,
1649  CURLOPT_WRITEDATA,
1650  s);
1651  /* No timeout by default, timeout done with session timeout */
1652  curl_easy_setopt (s->get.easyhandle,
1653  CURLOPT_TIMEOUT,
1654  0L);
1655  curl_easy_setopt (s->get.easyhandle,
1656  CURLOPT_PRIVATE, s);
1657  curl_easy_setopt (s->get.easyhandle,
1658  CURLOPT_CONNECTTIMEOUT_MS,
1659  (long) (HTTP_CLIENT_NOT_VALIDATED_TIMEOUT.rel_value_us
1660  / 1000LL));
1661  curl_easy_setopt (s->get.easyhandle, CURLOPT_BUFFERSIZE,
1663 #if CURL_TCP_NODELAY
1664  curl_easy_setopt (ps->recv_endpoint,
1665  CURLOPT_TCP_NODELAY,
1666  1L);
1667 #endif
1668  curl_easy_setopt (s->get.easyhandle,
1669  CURLOPT_FOLLOWLOCATION,
1670  0L);
1671 
1672  mret = curl_multi_add_handle (s->plugin->curl_multi_handle,
1673  s->get.easyhandle);
1674  if (CURLM_OK != mret)
1675  {
1677  "Session %p : Failed to add GET handle to multihandle: `%s'\n",
1678  s,
1679  curl_multi_strerror (mret));
1680  curl_easy_cleanup (s->get.easyhandle);
1681  s->get.easyhandle = NULL;
1682  s->get.s = NULL;
1683  GNUNET_break (0);
1684  return GNUNET_SYSERR;
1685  }
1686  s->plugin->cur_requests++;
1688  "GET request `%s' established, number of requests increased to %u\n",
1689  s->url,
1690  s->plugin->cur_requests);
1691  return GNUNET_OK;
1692 }
uint32_t options
Address options see enum HttpAddressOptions
const void * address
Binary representation of the address (plugin-specific).
struct GNUNET_GETOPT_CommandLineOption options[]
Definition: 002.c:5
struct Plugin * plugin
Pointer to the global plugin struct.
struct GNUNET_HELLO_Address * address
Address.
struct RequestHandle get
Handle for the HTTP GET request.
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
int int GNUNET_asprintf(char **buf, const char *format,...) __attribute__((format(printf
Like asprintf, just portable.
char * url
The URL to connect to.
#define HTTP_CLIENT_NOT_VALIDATED_TIMEOUT
static size_t client_receive(void *stream, size_t size, size_t nmemb, void *cls)
Callback method used with libcurl when data for a GET request are received.
Enable TCP Stealth-style port knocking.
#define GNUNET_MAX_MESSAGE_SIZE
Largest supported message (to be precise, one byte more than the largest possible message...
#define GNUNET_log(kind,...)
Verify X509 server certificate, it should be valid.
#define LOG(kind,...)
struct GNUNET_ATS_Session * s
The related session.
CURL * easyhandle
The curl easy handle.
HTTP addresses including a full URI.
#define GNUNET_free(ptr)
Wrapper around free.
static size_t client_send_cb(void *stream, size_t size, size_t nmemb, void *cls)
Callback method used with libcurl Method is called when libcurl needs to read data during sending...
Here is the call graph for this function:
Here is the caller graph for this function:

◆ client_connect_put()

static int client_connect_put ( struct GNUNET_ATS_Session s)
static

Connect a HTTP put request.

Parameters
sthe session to connect
Returns
GNUNET_SYSERR for hard failure, GNUNET_OK for success
Parameters
sthe session to connect
Returns
GNUNET_SYSERR for hard failure, GNUNET_OK for ok

Definition at line 1702 of file plugin_transport_http_client.c.

References GNUNET_HELLO_Address::address, GNUNET_ATS_Session::address, client_receive_put(), client_send_cb(), RequestHandle::easyhandle, GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_ERROR, GNUNET_ERROR_TYPE_INFO, GNUNET_log, GNUNET_MAX_MESSAGE_SIZE, GNUNET_OK, GNUNET_SYSERR, GNUNET_YES, H_CONNECTED, H_DISCONNECTED, HTTP_CLIENT_NOT_VALIDATED_TIMEOUT, HTTP_OPTIONS_TCP_STEALTH, HTTP_OPTIONS_VERIFY_CERTIFICATE, LOG, options, HttpAddress::options, GNUNET_ATS_Session::plugin, GNUNET_ATS_Session::put, RequestHandle::s, RequestHandle::state, and GNUNET_ATS_Session::url.

Referenced by client_connect(), client_run(), client_schedule(), and http_client_plugin_send().

1703 {
1704  CURLMcode mret;
1705  struct HttpAddress *ha;
1706  uint32_t options;
1707 
1708  ha = (struct HttpAddress *) s->address->address;
1709  options = ntohl (ha->options);
1710  /* create put request */
1712  "Session %p: Init PUT handle\n",
1713  s);
1714  s->put.easyhandle = curl_easy_init ();
1715  s->put.s = s;
1716 #if VERBOSE_CURL
1717  curl_easy_setopt (s->put.easyhandle,
1718  CURLOPT_VERBOSE,
1719  1L);
1720  curl_easy_setopt (s->put.easyhandle,
1721  CURLOPT_DEBUGFUNCTION,
1722  &client_log);
1723  curl_easy_setopt (s->put.easyhandle,
1724  CURLOPT_DEBUGDATA,
1725  &s->put);
1726 #endif
1727  if (0 != (options & HTTP_OPTIONS_TCP_STEALTH))
1728  {
1729 #ifdef TCP_STEALTH
1730  curl_easy_setopt (s->put.easyhandle,
1731  CURLOPT_OPENSOCKETFUNCTION,
1732  &open_tcp_stealth_socket_cb);
1733  curl_easy_setopt (s->put.easyhandle,
1734  CURLOPT_OPENSOCKETDATA,
1735  s);
1736 #else
1738  "Cannot connect, TCP STEALTH needed and not supported by kernel.\n");
1739  curl_easy_cleanup (s->put.easyhandle);
1740  s->put.easyhandle = NULL;
1741  s->put.s = NULL;
1742  s->put.state = H_DISCONNECTED;
1743  return GNUNET_SYSERR;
1744 #endif
1745  }
1746 #if BUILD_HTTPS
1747  curl_easy_setopt (s->put.easyhandle,
1748  CURLOPT_SSLVERSION,
1749  CURL_SSLVERSION_TLSv1);
1750  {
1751  struct HttpAddress *ha;
1752  ha = (struct HttpAddress *) s->address->address;
1753 
1755  (ntohl (ha->options) & HTTP_OPTIONS_VERIFY_CERTIFICATE))
1756  {
1757  curl_easy_setopt (s->put.easyhandle,
1758  CURLOPT_SSL_VERIFYPEER,
1759  1L);
1760  curl_easy_setopt (s->put.easyhandle,
1761  CURLOPT_SSL_VERIFYHOST,
1762  2L);
1763  }
1764  else
1765  {
1766  curl_easy_setopt (s->put.easyhandle,
1767  CURLOPT_SSL_VERIFYPEER,
1768  0L);
1769  curl_easy_setopt (s->put.easyhandle,
1770  CURLOPT_SSL_VERIFYHOST,
1771  0L);
1772  }
1773  }
1774  curl_easy_setopt (s->put.easyhandle,
1775  CURLOPT_PROTOCOLS,
1776  CURLPROTO_HTTPS);
1777  curl_easy_setopt (s->put.easyhandle,
1778  CURLOPT_REDIR_PROTOCOLS,
1779  CURLPROTO_HTTPS);
1780 #else
1781  curl_easy_setopt (s->put.easyhandle,
1782  CURLOPT_PROTOCOLS,
1783  CURLPROTO_HTTP);
1784  curl_easy_setopt (s->put.easyhandle,
1785  CURLOPT_REDIR_PROTOCOLS,
1786  CURLPROTO_HTTP);
1787 #endif
1788  if (NULL != s->plugin->proxy_hostname)
1789  {
1790  curl_easy_setopt (s->put.easyhandle,
1791  CURLOPT_PROXY,
1792  s->plugin->proxy_hostname);
1793  curl_easy_setopt (s->put.easyhandle,
1794  CURLOPT_PROXYTYPE,
1795  s->plugin->proxytype);
1796  if (NULL != s->plugin->proxy_username)
1797  curl_easy_setopt (s->put.easyhandle,
1798  CURLOPT_PROXYUSERNAME,
1799  s->plugin->proxy_username);
1800  if (NULL != s->plugin->proxy_password)
1801  curl_easy_setopt (s->put.easyhandle,
1802  CURLOPT_PROXYPASSWORD,
1803  s->plugin->proxy_password);
1804  if (GNUNET_YES == s->plugin->proxy_use_httpproxytunnel)
1805  curl_easy_setopt (s->put.easyhandle,
1806  CURLOPT_HTTPPROXYTUNNEL,
1807  s->plugin->proxy_use_httpproxytunnel);
1808  }
1809 
1810  curl_easy_setopt (s->put.easyhandle,
1811  CURLOPT_URL,
1812  s->url);
1813  curl_easy_setopt (s->put.easyhandle,
1814  CURLOPT_UPLOAD,
1815  1L);
1816  curl_easy_setopt (s->put.easyhandle,
1817  CURLOPT_READFUNCTION,
1818  &client_send_cb);
1819  curl_easy_setopt (s->put.easyhandle,
1820  CURLOPT_READDATA,
1821  s);
1822  curl_easy_setopt (s->put.easyhandle,
1823  CURLOPT_WRITEFUNCTION,
1825  curl_easy_setopt (s->put.easyhandle,
1826  CURLOPT_WRITEDATA,
1827  s);
1828  /* No timeout by default, timeout done with session timeout */
1829  curl_easy_setopt (s->put.easyhandle,
1830  CURLOPT_TIMEOUT,
1831  0L);
1832  curl_easy_setopt (s->put.easyhandle,
1833  CURLOPT_PRIVATE,
1834  s);
1835  curl_easy_setopt (s->put.easyhandle,
1836  CURLOPT_CONNECTTIMEOUT_MS,
1837  (long) (HTTP_CLIENT_NOT_VALIDATED_TIMEOUT.rel_value_us
1838  / 1000LL));
1839  curl_easy_setopt (s->put.easyhandle, CURLOPT_BUFFERSIZE,
1841 #if CURL_TCP_NODELAY
1842  curl_easy_setopt (s->put.easyhandle, CURLOPT_TCP_NODELAY, 1);
1843 #endif
1844  mret = curl_multi_add_handle (s->plugin->curl_multi_handle,
1845  s->put.easyhandle);
1846  if (CURLM_OK != mret)
1847  {
1849  "Session %p : Failed to add PUT handle to multihandle: `%s'\n",
1850  s, curl_multi_strerror (mret));
1851  curl_easy_cleanup (s->put.easyhandle);
1852  s->put.easyhandle = NULL;
1853  s->put.s = NULL;
1854  s->put.state = H_DISCONNECTED;
1855  return GNUNET_SYSERR;
1856  }
1857  s->put.state = H_CONNECTED;
1858  s->plugin->cur_requests++;
1859 
1861  "PUT request `%s' established, number of requests increased to %u\n",
1862  s->url, s->plugin->cur_requests);
1863 
1864  return GNUNET_OK;
1865 }
uint32_t options
Address options see enum HttpAddressOptions
const void * address
Binary representation of the address (plugin-specific).
struct GNUNET_GETOPT_CommandLineOption options[]
Definition: 002.c:5
struct Plugin * plugin
Pointer to the global plugin struct.
struct RequestHandle put
Handle for the HTTP PUT request.
static size_t client_receive_put(void *stream, size_t size, size_t nmemb, void *cls)
Callback method used with libcurl when data for a PUT request are received.
struct GNUNET_HELLO_Address * address
Address.
char * url
The URL to connect to.
#define HTTP_CLIENT_NOT_VALIDATED_TIMEOUT
Enable TCP Stealth-style port knocking.
#define GNUNET_MAX_MESSAGE_SIZE
Largest supported message (to be precise, one byte more than the largest possible message...
#define GNUNET_log(kind,...)
Verify X509 server certificate, it should be valid.
#define LOG(kind,...)
enum HTTP_PUT_REQUEST_STATE state
Current state of this request.
struct GNUNET_ATS_Session * s
The related session.
CURL * easyhandle
The curl easy handle.
HTTP addresses including a full URI.
static size_t client_send_cb(void *stream, size_t size, size_t nmemb, void *cls)
Callback method used with libcurl Method is called when libcurl needs to read data during sending...
Here is the call graph for this function:
Here is the caller graph for this function:

◆ http_client_plugin_send()

static ssize_t http_client_plugin_send ( void *  cls,
struct GNUNET_ATS_Session s,
const char *  msgbuf,
size_t  msgbuf_size,
unsigned int  priority,
struct GNUNET_TIME_Relative  to,
GNUNET_TRANSPORT_TransmitContinuation  cont,
void *  cont_cls 
)
static

Function that can be used by the transport service to transmit a message using the plugin.

Note that in the case of a peer disconnecting, the continuation MUST be called prior to the disconnect notification itself. This function will be called with this peer's HELLO message to initiate a fresh connection to another peer.

Parameters
clsclosure
swhich session must be used
msgbufthe message to transmit
msgbuf_sizenumber of bytes in msgbuf
priorityhow important is the message (most plugins will ignore message priority and just FIFO)
tohow long to wait at most for the transmission (does not require plugins to discard the message after the timeout, just advisory for the desired delay; most plugins will ignore this as well)
contcontinuation to call once the message has been transmitted (or if the transport is ready for the next transmission call; or if the peer disconnected...); can be NULL
cont_clsclosure for cont
Returns
number of bytes used (on the physical network, with overheads); -1 on hard errors (i.e. address invalid); 0 is a legal value and does NOT mean that the message was not transmitted (DV)

Definition at line 758 of file plugin_transport_http_client.c.

References GNUNET_ATS_Session::address, HTTP_Message::buf, GNUNET_ATS_Session::bytes_in_queue, client_connect_put(), client_schedule(), RequestHandle::easyhandle, HTTP_Client_Plugin::env, GNUNET_asprintf(), GNUNET_assert, GNUNET_break, GNUNET_CONTAINER_DLL_insert_tail, GNUNET_ERROR_TYPE_DEBUG, GNUNET_free, GNUNET_i2s(), GNUNET_malloc, GNUNET_memcpy, GNUNET_NO, GNUNET_SCHEDULER_cancel(), GNUNET_STATISTICS_update(), GNUNET_SYSERR, GNUNET_TRANSPORT_SS_UPDATE, GNUNET_YES, H_CONNECTED, H_PAUSED, H_TMP_DISCONNECTED, H_TMP_DISCONNECTING, H_TMP_RECONNECT_REQUIRED, http_client_plugin_session_disconnect(), LOG, msg, GNUNET_ATS_Session::msg_head, GNUNET_ATS_Session::msg_tail, GNUNET_ATS_Session::msgs_in_queue, notify_session_monitor(), GNUNET_HELLO_Address::peer, plugin, GNUNET_ATS_Session::plugin, HTTP_Client_Plugin::protocol, GNUNET_ATS_Session::put, GNUNET_ATS_Session::put_disconnect_task, HTTP_Message::size, RequestHandle::state, GNUNET_TRANSPORT_PluginEnvironment::stats, HTTP_Message::transmit_cont, and HTTP_Message::transmit_cont_cls.

Referenced by libgnunet_plugin_transport_http_client_init().

766 {
767  struct HTTP_Client_Plugin *plugin = cls;
768  struct HTTP_Message *msg;
769  char *stat_txt;
770 
772  "Session %p/request %p: Sending message with %lu to peer `%s' \n",
773  s,
774  s->put.easyhandle,
775  (unsigned long) msgbuf_size,
776  GNUNET_i2s (&s->address->peer));
777 
778  /* create new message and schedule */
779  msg = GNUNET_malloc (sizeof(struct HTTP_Message) + msgbuf_size);
780  msg->size = msgbuf_size;
781  msg->buf = (char *) &msg[1];
782  msg->transmit_cont = cont;
783  msg->transmit_cont_cls = cont_cls;
784  GNUNET_memcpy (msg->buf,
785  msgbuf,
786  msgbuf_size);
788  s->msg_tail,
789  msg);
790  s->msgs_in_queue++;
791  s->bytes_in_queue += msg->size;
792 
793  GNUNET_asprintf (&stat_txt,
794  "# bytes currently in %s_client buffers",
795  plugin->protocol);
797  stat_txt, msgbuf_size, GNUNET_NO);
798  GNUNET_free (stat_txt);
799  notify_session_monitor (plugin,
800  s,
802  if (H_TMP_DISCONNECTING == s->put.state)
803  {
804  /* PUT request is currently getting disconnected */
807  "Session %p/request %p: currently disconnecting, reconnecting immediately\n",
808  s,
809  s->put.easyhandle);
810  return msgbuf_size;
811  }
812  if (H_PAUSED == s->put.state)
813  {
814  /* PUT request was paused, unpause */
815  GNUNET_assert (s->put_disconnect_task != NULL);
817  s->put_disconnect_task = NULL;
819  "Session %p/request %p: unpausing request\n",
820  s, s->put.easyhandle);
821  s->put.state = H_CONNECTED;
822  if (NULL != s->put.easyhandle)
823  curl_easy_pause (s->put.easyhandle, CURLPAUSE_CONT);
824  }
825  else if (H_TMP_DISCONNECTED == s->put.state)
826  {
827  /* PUT request was disconnected, reconnect */
828  LOG (GNUNET_ERROR_TYPE_DEBUG, "Session %p: Reconnecting PUT request\n", s);
829  GNUNET_break (NULL == s->put.easyhandle);
831  {
832  /* Could not reconnect */
834  return GNUNET_SYSERR;
835  }
836  }
838  return msgbuf_size;
839 }
struct GNUNET_MessageHeader * msg
Definition: 005.c:2
static int http_client_plugin_session_disconnect(void *cls, struct GNUNET_ATS_Session *s)
Disconnect a session.
char * buf
buffer containing data to send
unsigned int msgs_in_queue
Number of messages waiting for transmission to this peer.
struct HTTP_Message * msg_tail
previous pointer for double linked list
struct Plugin * plugin
Pointer to the global plugin struct.
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
struct RequestHandle put
Handle for the HTTP PUT request.
Message to send using http.
#define GNUNET_memcpy(dst, src, n)
Call memcpy() but check for n being 0 first.
struct GNUNET_HELLO_Address * address
Address.
struct GNUNET_TRANSPORT_PluginEnvironment * env
Our environment.
struct HTTP_Message * msg_head
next pointer for double linked list
struct GNUNET_SCHEDULER_Task * put_disconnect_task
Session timeout task.
void GNUNET_STATISTICS_update(struct GNUNET_STATISTICS_Handle *handle, const char *name, int64_t delta, int make_persistent)
Set statistic value for the peer.
unsigned long long bytes_in_queue
Number of bytes waiting for transmission to this peer.
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
void * transmit_cont_cls
Closure for transmit_cont.
GNUNET_TRANSPORT_TransmitContinuation transmit_cont
Continuation function to call once the transmission buffer has again space available.
Paused, nothing to send.
static void notify_session_monitor(struct HTTP_Client_Plugin *plugin, struct GNUNET_ATS_Session *session, enum GNUNET_TRANSPORT_SessionState state)
If a session monitor is attached, notify it about the new session state.
Temporarily disconnected.
static int client_schedule(struct HTTP_Client_Plugin *plugin, int now)
Function setting up file descriptors and scheduling task to run.
static int client_connect_put(struct GNUNET_ATS_Session *s)
Connect a HTTP put request.
int int GNUNET_asprintf(char **buf, const char *format,...) __attribute__((format(printf
Like asprintf, just portable.
size_t size
buffer length
#define GNUNET_CONTAINER_DLL_insert_tail(head, tail, element)
Insert an element at the tail of a DLL.
struct GNUNET_PeerIdentity peer
For which peer is this an address?
Encapsulation of all of the state of the plugin.
This is just an update about the session, the state did not change.
struct GNUNET_STATISTICS_Handle * stats
Handle for reporting statistics.
struct Plugin * plugin
#define LOG(kind,...)
enum HTTP_PUT_REQUEST_STATE state
Current state of this request.
Temporary disconnect in progress due to inactivity.
CURL * easyhandle
The curl easy handle.
const char * GNUNET_i2s(const struct GNUNET_PeerIdentity *pid)
Convert a peer identity to a string (for printing debug messages).
#define GNUNET_malloc(size)
Wrapper around malloc.
#define GNUNET_free(ptr)
Wrapper around free.
Send request while temporary disconnect, reconnect.
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:972
Here is the call graph for this function:
Here is the caller graph for this function:

◆ http_client_query_keepalive_factor()

static unsigned int http_client_query_keepalive_factor ( void *  cls)
static

Function that is called to get the keepalive factor.

GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT is divided by this number to calculate the interval between keepalive packets.

Parameters
clsclosure with the struct Plugin
Returns
keepalive factor

Definition at line 884 of file plugin_transport_http_client.c.

Referenced by libgnunet_plugin_transport_http_client_init().

885 {
886  return 3;
887 }
Here is the caller graph for this function:

◆ destroy_session_cb()

static int destroy_session_cb ( void *  cls,
const struct GNUNET_PeerIdentity peer,
void *  value 
)
static

Callback to destroys all sessions on exit.

Parameters
clsthe struct HTTP_Client_Plugin *
peeridentity of the peer
valuethe struct GNUNET_ATS_Session *
Returns
GNUNET_OK (continue iterating)

Definition at line 899 of file plugin_transport_http_client.c.

References GNUNET_OK, http_client_plugin_session_disconnect(), plugin, and value.

Referenced by http_client_plugin_peer_disconnect(), and libgnunet_plugin_transport_http_client_done().

902 {
903  struct HTTP_Client_Plugin *plugin = cls;
904  struct GNUNET_ATS_Session *session = value;
905 
906  http_client_plugin_session_disconnect (plugin, session);
907  return GNUNET_OK;
908 }
static int http_client_plugin_session_disconnect(void *cls, struct GNUNET_ATS_Session *s)
Disconnect a session.
static char * value
Value of the record to add/remove.
Session handle for connections.
Encapsulation of all of the state of the plugin.
struct Plugin * plugin
Here is the call graph for this function:
Here is the caller graph for this function:

◆ http_client_plugin_peer_disconnect()

static void http_client_plugin_peer_disconnect ( void *  cls,
const struct GNUNET_PeerIdentity target 
)
static

Function that can be used to force the plugin to disconnect from the given peer and cancel all previous transmissions (and their continuationc).

Parameters
clsclosure
targetpeer from which to disconnect

Definition at line 920 of file plugin_transport_http_client.c.

References destroy_session_cb(), GNUNET_CONTAINER_multipeermap_get_multiple(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_i2s(), LOG, plugin, and HTTP_Client_Plugin::sessions.

Referenced by libgnunet_plugin_transport_http_client_init().

922 {
923  struct HTTP_Client_Plugin *plugin = cls;
924 
926  "Transport tells me to disconnect `%s'\n",
927  GNUNET_i2s (target));
929  target,
931  plugin);
932 }
static int destroy_session_cb(void *cls, const struct GNUNET_PeerIdentity *peer, void *value)
Callback to destroys all sessions on exit.
struct GNUNET_CONTAINER_MultiPeerMap * sessions
Open sessions.
Encapsulation of all of the state of the plugin.
struct Plugin * plugin
#define LOG(kind,...)
const char * GNUNET_i2s(const struct GNUNET_PeerIdentity *pid)
Convert a peer identity to a string (for printing debug messages).
int GNUNET_CONTAINER_multipeermap_get_multiple(struct GNUNET_CONTAINER_MultiPeerMap *map, const struct GNUNET_PeerIdentity *key, GNUNET_CONTAINER_PeerMapIterator it, void *it_cls)
Iterate over all entries in the map that match a particular key.
Here is the call graph for this function:
Here is the caller graph for this function:

◆ session_lookup_client_by_address()

static int session_lookup_client_by_address ( void *  cls,
const struct GNUNET_PeerIdentity key,
void *  value 
)
static

Locate the seession object for a given address.

Parameters
clsthe struct GNUNET_ATS_SessionClientCtx *
keypeer identity
valuethe struct GNUNET_ATS_Session to check
Returns
GNUNET_NO if found, GNUNET_OK if not

Definition at line 961 of file plugin_transport_http_client.c.

References GNUNET_ATS_Session::address, GNUNET_ATS_SessionClientCtx::address, GNUNET_HELLO_address_cmp(), GNUNET_NO, GNUNET_YES, GNUNET_ATS_SessionClientCtx::ret, and value.

Referenced by client_lookup_session().

964 {
965  struct GNUNET_ATS_SessionClientCtx *sc_ctx = cls;
966  struct GNUNET_ATS_Session *s = value;
967 
968  if (0 == GNUNET_HELLO_address_cmp (sc_ctx->address,
969  s->address))
970  {
971  sc_ctx->ret = s;
972  return GNUNET_NO;
973  }
974  return GNUNET_YES;
975 }
struct GNUNET_HELLO_Address * address
Address.
const struct GNUNET_HELLO_Address * address
Address we are looking for.
int GNUNET_HELLO_address_cmp(const struct GNUNET_HELLO_Address *a1, const struct GNUNET_HELLO_Address *a2)
Compare two addresses.
Definition: address.c:130
static char * value
Value of the record to add/remove.
Session handle for connections.
Closure for session_lookup_client_by_address().
struct GNUNET_ATS_Session * ret
Session that was found.
Here is the call graph for this function:
Here is the caller graph for this function:

◆ client_lookup_session()

static struct GNUNET_ATS_Session* client_lookup_session ( struct HTTP_Client_Plugin plugin,
const struct GNUNET_HELLO_Address address 
)
static

Check if a sessions exists for an specific address.

Parameters
pluginthe plugin
addressthe address
Returns
the session or NULL

Definition at line 986 of file plugin_transport_http_client.c.

References address, GNUNET_ATS_SessionClientCtx::address, GNUNET_CONTAINER_multipeermap_iterate(), GNUNET_ATS_SessionClientCtx::ret, session_lookup_client_by_address(), and HTTP_Client_Plugin::sessions.

Referenced by http_client_plugin_get_session().

988 {
989  struct GNUNET_ATS_SessionClientCtx sc_ctx;
990 
991  sc_ctx.address = address;
992  sc_ctx.ret = NULL;
995  &sc_ctx);
996  return sc_ctx.ret;
997 }
const struct GNUNET_HELLO_Address * address
Address we are looking for.
static int session_lookup_client_by_address(void *cls, const struct GNUNET_PeerIdentity *key, void *value)
Locate the seession object for a given address.
Closure for session_lookup_client_by_address().
struct GNUNET_CONTAINER_MultiPeerMap * sessions
Open sessions.
int GNUNET_CONTAINER_multipeermap_iterate(struct GNUNET_CONTAINER_MultiPeerMap *map, GNUNET_CONTAINER_PeerMapIterator it, void *it_cls)
Iterate over all entries in the map.
static char * address
GNS address for this phone.
Here is the call graph for this function:
Here is the caller graph for this function:

◆ client_put_disconnect()

static void client_put_disconnect ( void *  cls)
static

When we have nothing to transmit, we pause the HTTP PUT after a while (so that gnurl stops asking).

This task is the delayed task that actually disconnects the PUT.

Parameters
clsthe struct GNUNET_ATS_Session * with the put

Definition at line 1008 of file plugin_transport_http_client.c.

References client_schedule(), RequestHandle::easyhandle, GNUNET_ERROR_TYPE_DEBUG, GNUNET_YES, H_TMP_DISCONNECTING, LOG, GNUNET_ATS_Session::plugin, GNUNET_ATS_Session::put, GNUNET_ATS_Session::put_disconnect_task, and RequestHandle::state.

Referenced by client_send_cb().

1009 {
1010  struct GNUNET_ATS_Session *s = cls;
1011 
1012  s->put_disconnect_task = NULL;
1014  "Session %p/request %p: will be disconnected due to no activity\n",
1015  s, s->put.easyhandle);
1017  if (NULL != s->put.easyhandle)
1018  curl_easy_pause (s->put.easyhandle,
1019  CURLPAUSE_CONT);
1021 }
struct Plugin * plugin
Pointer to the global plugin struct.
struct RequestHandle put
Handle for the HTTP PUT request.
struct GNUNET_SCHEDULER_Task * put_disconnect_task
Session timeout task.
static int client_schedule(struct HTTP_Client_Plugin *plugin, int now)
Function setting up file descriptors and scheduling task to run.
Session handle for connections.
#define LOG(kind,...)
enum HTTP_PUT_REQUEST_STATE state
Current state of this request.
Temporary disconnect in progress due to inactivity.
CURL * easyhandle
The curl easy handle.
Here is the call graph for this function:
Here is the caller graph for this function:

◆ client_send_cb()

static size_t client_send_cb ( void *  stream,
size_t  size,
size_t  nmemb,
void *  cls 
)
static

Callback method used with libcurl Method is called when libcurl needs to read data during sending.

Parameters
streampointer where to write data
sizesize of an individual element
nmembcount of elements that can be written to the buffer
clsour struct GNUNET_ATS_Session
Returns
bytes written to stream, returning 0 will terminate request!

Definition at line 1035 of file plugin_transport_http_client.c.

References GNUNET_ATS_Session::address, HTTP_Message::buf, GNUNET_ATS_Session::bytes_in_queue, client_put_disconnect(), RequestHandle::easyhandle, HTTP_Client_Plugin::emulate_xhr, HTTP_Client_Plugin::env, GNUNET_asprintf(), GNUNET_assert, GNUNET_CONTAINER_DLL_remove, GNUNET_ERROR_TYPE_DEBUG, GNUNET_free, GNUNET_memcpy, GNUNET_MIN, GNUNET_NO, GNUNET_OK, GNUNET_SCHEDULER_add_delayed(), GNUNET_STATISTICS_update(), GNUNET_TRANSPORT_SS_UPDATE, GNUNET_YES, H_PAUSED, H_TMP_DISCONNECTING, len, LOG, msg, GNUNET_ATS_Session::msg_head, GNUNET_ATS_Session::msg_tail, GNUNET_ATS_Session::msgs_in_queue, notify_session_monitor(), GNUNET_ATS_Session::overhead, GNUNET_HELLO_Address::peer, plugin, GNUNET_ATS_Session::plugin, HTTP_Message::pos, HTTP_Client_Plugin::protocol, GNUNET_ATS_Session::put, GNUNET_ATS_Session::put_disconnect_task, PUT_DISCONNECT_TIMEOUT, HTTP_Message::size, RequestHandle::state, GNUNET_TRANSPORT_PluginEnvironment::stats, HTTP_Message::transmit_cont, and HTTP_Message::transmit_cont_cls.

Referenced by client_connect_get(), and client_connect_put().

1039 {
1040  struct GNUNET_ATS_Session *s = cls;
1041  struct HTTP_Client_Plugin *plugin = s->plugin;
1042  struct HTTP_Message *msg = s->msg_head;
1043  size_t len;
1044  char *stat_txt;
1045 
1046  if (H_TMP_DISCONNECTING == s->put.state)
1047  {
1049  "Session %p/request %p: disconnect due to inactivity\n",
1050  s, s->put.easyhandle);
1051  return 0;
1052  }
1053 
1054  if (NULL == msg)
1055  {
1056  if (GNUNET_YES == plugin->emulate_xhr)
1057  {
1059  "Session %p/request %p: PUT request finished\n",
1060  s,
1061  s->put.easyhandle);
1063  return 0;
1064  }
1065 
1066  /* We have nothing to send, so pause PUT request */
1068  "Session %p/request %p: nothing to send, suspending\n",
1069  s,
1070  s->put.easyhandle);
1074  s);
1075  s->put.state = H_PAUSED;
1076  return CURL_READFUNC_PAUSE;
1077  }
1078  /* data to send */
1079  GNUNET_assert (msg->pos < msg->size);
1080  /* calculate how much fits in buffer */
1081  len = GNUNET_MIN (msg->size - msg->pos,
1082  size * nmemb);
1083  GNUNET_memcpy (stream,
1084  &msg->buf[msg->pos],
1085  len);
1086  msg->pos += len;
1087  if (msg->pos == msg->size)
1088  {
1090  "Session %p/request %p: sent message with %lu bytes sent, removing message from queue\n",
1091  s,
1092  s->put.easyhandle,
1093  (unsigned long) msg->size);
1094  /* Calling transmit continuation */
1096  s->msg_tail,
1097  msg);
1098  GNUNET_assert (0 < s->msgs_in_queue);
1099  s->msgs_in_queue--;
1100  GNUNET_assert (msg->size <= s->bytes_in_queue);
1101  s->bytes_in_queue -= msg->size;
1102  if (NULL != msg->transmit_cont)
1103  msg->transmit_cont (msg->transmit_cont_cls,
1104  &s->address->peer,
1105  GNUNET_OK,
1106  msg->size,
1107  msg->size + s->overhead);
1108  s->overhead = 0;
1109  GNUNET_free (msg);
1110  }
1111  notify_session_monitor (plugin,
1112  s,
1114  GNUNET_asprintf (&stat_txt,
1115  "# bytes currently in %s_client buffers",
1116  plugin->protocol);
1118  stat_txt,
1119  -len,
1120  GNUNET_NO);
1121  GNUNET_free (stat_txt);
1122  GNUNET_asprintf (&stat_txt,
1123  "# bytes transmitted via %s_client",
1124  plugin->protocol);
1126  stat_txt,
1127  len,
1128  GNUNET_NO);
1129  GNUNET_free (stat_txt);
1130  return len;
1131 }
#define GNUNET_CONTAINER_DLL_remove(head, tail, element)
Remove an element from a DLL.
struct GNUNET_MessageHeader * msg
Definition: 005.c:2
char * buf
buffer containing data to send
unsigned int msgs_in_queue
Number of messages waiting for transmission to this peer.
struct HTTP_Message * msg_tail
previous pointer for double linked list
struct Plugin * plugin
Pointer to the global plugin struct.
#define PUT_DISCONNECT_TIMEOUT
size_t pos
amount of data already sent
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
struct RequestHandle put
Handle for the HTTP PUT request.
Message to send using http.
#define GNUNET_memcpy(dst, src, n)
Call memcpy() but check for n being 0 first.
struct GNUNET_HELLO_Address * address
Address.
struct GNUNET_TRANSPORT_PluginEnvironment * env
Our environment.
struct HTTP_Message * msg_head
next pointer for double linked list
struct GNUNET_SCHEDULER_Task * put_disconnect_task
Session timeout task.
void GNUNET_STATISTICS_update(struct GNUNET_STATISTICS_Handle *handle, const char *name, int64_t delta, int make_persistent)
Set statistic value for the peer.
unsigned long long bytes_in_queue
Number of bytes waiting for transmission to this peer.
void * transmit_cont_cls
Closure for transmit_cont.
GNUNET_TRANSPORT_TransmitContinuation transmit_cont
Continuation function to call once the transmission buffer has again space available.
Paused, nothing to send.
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_delayed(struct GNUNET_TIME_Relative delay, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay.
Definition: scheduler.c:1269
static void notify_session_monitor(struct HTTP_Client_Plugin *plugin, struct GNUNET_ATS_Session *session, enum GNUNET_TRANSPORT_SessionState state)
If a session monitor is attached, notify it about the new session state.
static void client_put_disconnect(void *cls)
When we have nothing to transmit, we pause the HTTP PUT after a while (so that gnurl stops asking)...
Session handle for connections.
#define GNUNET_MIN(a, b)
Definition: gnunet_common.h:93
int int GNUNET_asprintf(char **buf, const char *format,...) __attribute__((format(printf
Like asprintf, just portable.
size_t size
buffer length
static unsigned int size
Size of the "table".
Definition: peer.c:67
int emulate_xhr
Should we emulate an XHR client for testing?
struct GNUNET_PeerIdentity peer
For which peer is this an address?
Encapsulation of all of the state of the plugin.
This is just an update about the session, the state did not change.
struct GNUNET_STATISTICS_Handle * stats
Handle for reporting statistics.
struct Plugin * plugin
size_t overhead
Outbound overhead due to HTTP connection Add to next message of this session when calling callback...
#define LOG(kind,...)
enum HTTP_PUT_REQUEST_STATE state
Current state of this request.
Temporary disconnect in progress due to inactivity.
CURL * easyhandle
The curl easy handle.
#define GNUNET_free(ptr)
Wrapper around free.
uint16_t len
length of data (which is always a uint32_t, but presumably this can be used to specify that fewer byt...
Here is the call graph for this function:
Here is the caller graph for this function:

◆ client_wake_up()

static void client_wake_up ( void *  cls)
static

Wake up a curl handle which was suspended.

Parameters
clsthe session

Definition at line 1140 of file plugin_transport_http_client.c.

References RequestHandle::easyhandle, GNUNET_ATS_Session::get, GNUNET_assert, GNUNET_ERROR_TYPE_DEBUG, GNUNET_SCHEDULER_cancel(), H_CONNECTED, H_PAUSED, LOG, GNUNET_ATS_Session::put, GNUNET_ATS_Session::put_disconnect_task, GNUNET_ATS_Session::recv_wakeup_task, and RequestHandle::state.

Referenced by client_receive(), and http_client_plugin_update_inbound_delay().

1141 {
1142  struct GNUNET_ATS_Session *s = cls;
1143 
1144  s->recv_wakeup_task = NULL;
1146  "Session %p/request %p: Waking up GET handle\n",
1147  s, s->get.easyhandle);
1148  if (H_PAUSED == s->put.state)
1149  {
1150  /* PUT request was paused, unpause */
1151  GNUNET_assert (s->put_disconnect_task != NULL);
1153  s->put_disconnect_task = NULL;
1154  s->put.state = H_CONNECTED;
1155  if (NULL != s->put.easyhandle)
1156  curl_easy_pause (s->put.easyhandle, CURLPAUSE_CONT);
1157  }
1158  if (NULL != s->get.easyhandle)
1159  curl_easy_pause (s->get.easyhandle, CURLPAUSE_CONT);
1160 }
struct GNUNET_SCHEDULER_Task * recv_wakeup_task
Task to wake up client receive handle when receiving is allowed again.
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
struct RequestHandle put
Handle for the HTTP PUT request.
struct RequestHandle get
Handle for the HTTP GET request.
struct GNUNET_SCHEDULER_Task * put_disconnect_task
Session timeout task.
Paused, nothing to send.
Session handle for connections.
#define LOG(kind,...)
enum HTTP_PUT_REQUEST_STATE state
Current state of this request.
CURL * easyhandle
The curl easy handle.
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:972
Here is the call graph for this function:
Here is the caller graph for this function:

◆ client_receive_mst_cb()

static int client_receive_mst_cb ( void *  cls,
const struct GNUNET_MessageHeader message 
)
static

Callback for message stream tokenizer.

Parameters
clsthe session
messagethe message received
Returns
always GNUNET_OK

Definition at line 1171 of file plugin_transport_http_client.c.

References GNUNET_TIME_Absolute::abs_value_us, GNUNET_HELLO_Address::address, GNUNET_ATS_Session::address, GNUNET_HELLO_Address::address_length, client_reschedule_session_timeout(), GNUNET_TRANSPORT_PluginEnvironment::cls, Plugin::env, HTTP_Client_Plugin::env, GNUNET_asprintf(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_free, GNUNET_i2s(), GNUNET_NO, GNUNET_OK, GNUNET_STATISTICS_update(), GNUNET_STRINGS_relative_time_to_string(), GNUNET_TIME_absolute_get(), GNUNET_TIME_relative_to_absolute(), GNUNET_YES, http_common_plugin_address_to_string(), LOG, GNUNET_ATS_Session::next_receive, GNUNET_HELLO_Address::peer, plugin, GNUNET_ATS_Session::plugin, Plugin::protocol, HTTP_Client_Plugin::protocol, GNUNET_MessageHeader::size, and GNUNET_TRANSPORT_PluginEnvironment::stats.

Referenced by client_receive().

1173 {
1174  struct GNUNET_ATS_Session *s = cls;
1175  struct HTTP_Client_Plugin *plugin;
1176  struct GNUNET_TIME_Relative delay;
1177  char *stat_txt;
1178 
1179  plugin = s->plugin;
1180  delay = s->plugin->env->receive (plugin->env->cls,
1181  s->address,
1182  s,
1183  message);
1184  GNUNET_asprintf (&stat_txt,
1185  "# bytes received via %s_client",
1186  plugin->protocol);
1188  stat_txt,
1189  ntohs (message->size),
1190  GNUNET_NO);
1191  GNUNET_free (stat_txt);
1192 
1194  if (GNUNET_TIME_absolute_get ().abs_value_us < s->next_receive.abs_value_us)
1195  {
1197  "Client: peer `%s' address `%s' next read delayed for %s\n",
1198  GNUNET_i2s (&s->address->peer),
1200  s->address->address,
1201  s->address->address_length),
1203  GNUNET_YES));
1204  }
1206  return GNUNET_OK;
1207 }
size_t address_length
Number of bytes in address.
const void * address
Binary representation of the address (plugin-specific).
struct Plugin * plugin
Pointer to the global plugin struct.
struct GNUNET_TIME_Absolute GNUNET_TIME_relative_to_absolute(struct GNUNET_TIME_Relative rel)
Convert relative time to an absolute time in the future.
Definition: time.c:181
char * protocol
Plugin protocol http, https.
struct GNUNET_HELLO_Address * address
Address.
struct GNUNET_TRANSPORT_PluginEnvironment * env
Our environment.
uint16_t size
The length of the struct (in bytes, including the length field itself), in big-endian format...
void GNUNET_STATISTICS_update(struct GNUNET_STATISTICS_Handle *handle, const char *name, int64_t delta, int make_persistent)
Set statistic value for the peer.
uint64_t abs_value_us
The actual value.
struct GNUNET_TIME_Absolute next_receive
Absolute time when to receive data again Used for receive throttling.
void * cls
Closure for the various callbacks.
Session handle for connections.
struct GNUNET_DATACACHE_PluginEnvironment * env
Our execution environment.
const char * GNUNET_STRINGS_relative_time_to_string(struct GNUNET_TIME_Relative delta, int do_round)
Give relative time in human-readable fancy format.
Definition: strings.c:557
struct GNUNET_TIME_Absolute GNUNET_TIME_absolute_get(void)
Get the current time.
Definition: time.c:86
static void client_reschedule_session_timeout(struct GNUNET_ATS_Session *s)
Increment session timeout due to activity for session s.
int int GNUNET_asprintf(char **buf, const char *format,...) __attribute__((format(printf
Like asprintf, just portable.
static struct GNUNET_TIME_Relative delay
When should dkg communication start?
struct GNUNET_PeerIdentity peer
For which peer is this an address?
Encapsulation of all of the state of the plugin.
const char * http_common_plugin_address_to_string(const char *plugin, const void *addr, size_t addrlen)
Function called for a quick conversion of the binary address to a numeric address.
struct GNUNET_STATISTICS_Handle * stats
Handle for reporting statistics.
struct Plugin * plugin
#define LOG(kind,...)
const char * GNUNET_i2s(const struct GNUNET_PeerIdentity *pid)
Convert a peer identity to a string (for printing debug messages).
#define GNUNET_free(ptr)
Wrapper around free.
Time for relative time used by GNUnet, in microseconds.
Here is the call graph for this function:
Here is the caller graph for this function:

◆ client_receive_put()

static size_t client_receive_put ( void *  stream,
size_t  size,
size_t  nmemb,
void *  cls 
)
static

Callback method used with libcurl when data for a PUT request are received.

We do not expect data here, so we just discard it.

Parameters
streampointer where to write data
sizesize of an individual element
nmembcount of elements that can be written to the buffer
clsdestination pointer, passed to the libcurl handle
Returns
bytes read from stream

Definition at line 1221 of file plugin_transport_http_client.c.

Referenced by client_connect_put().

1225 {
1226  return size * nmemb;
1227 }
static unsigned int size
Size of the "table".
Definition: peer.c:67
Here is the caller graph for this function:

◆ client_receive()

static size_t client_receive ( void *  stream,
size_t  size,
size_t  nmemb,
void *  cls 
)
static

Callback method used with libcurl when data for a GET request are received.

Forward to MST

Parameters
streampointer where to write data
sizesize of an individual element
nmembcount of elements that can be written to the buffer
clsdestination pointer, passed to the libcurl handle
Returns
bytes read from stream

Definition at line 1241 of file plugin_transport_http_client.c.

References GNUNET_TIME_Absolute::abs_value_us, GNUNET_ATS_Session::address, client_receive_mst_cb(), client_wake_up(), RequestHandle::easyhandle, GNUNET_ATS_Session::get, GNUNET_ERROR_TYPE_DEBUG, GNUNET_i2s(), GNUNET_MST_create(), GNUNET_MST_from_buffer(), GNUNET_NO, GNUNET_SCHEDULER_add_delayed(), GNUNET_SCHEDULER_cancel(), GNUNET_STRINGS_relative_time_to_string(), GNUNET_TIME_absolute_get(), GNUNET_TIME_absolute_get_difference(), GNUNET_YES, len, LOG, GNUNET_ATS_Session::msg_tk, GNUNET_ATS_Session::next_receive, GNUNET_HELLO_Address::peer, and GNUNET_ATS_Session::recv_wakeup_task.

Referenced by client_connect_get().

1245 {
1246  struct GNUNET_ATS_Session *s = cls;
1247  struct GNUNET_TIME_Absolute now;
1248  size_t len = size * nmemb;
1249 
1251  "Session %p / request %p: Received %lu bytes from peer `%s'\n",
1252  s,
1253  s->get.easyhandle,
1254  (unsigned long) len,
1255  GNUNET_i2s (&s->address->peer));
1256  now = GNUNET_TIME_absolute_get ();
1257  if (now.abs_value_us < s->next_receive.abs_value_us)
1258  {
1262 
1264  "Session %p / request %p: No inbound bandwidth available! Next read was delayed for %s\n",
1265  s,
1266  s->get.easyhandle,
1268  GNUNET_YES));
1269  if (s->recv_wakeup_task != NULL)
1270  {
1272  s->recv_wakeup_task = NULL;
1273  }
1274  s->recv_wakeup_task
1276  &client_wake_up,
1277  s);
1278  return CURL_WRITEFUNC_PAUSE;
1279  }
1280  if (NULL == s->msg_tk)
1282  s);
1284  stream,
1285  len,
1286  GNUNET_NO,
1287  GNUNET_NO);
1288  return len;
1289 }
static int client_receive_mst_cb(void *cls, const struct GNUNET_MessageHeader *message)
Callback for message stream tokenizer.
struct GNUNET_SCHEDULER_Task * recv_wakeup_task
Task to wake up client receive handle when receiving is allowed again.
static struct GNUNET_TIME_Relative delta
Definition: speedup.c:35
struct GNUNET_SERVER_MessageStreamTokenizer * msg_tk
Message stream tokenizer for incoming data.
struct GNUNET_HELLO_Address * address
Address.
static void client_wake_up(void *cls)
Wake up a curl handle which was suspended.
struct RequestHandle get
Handle for the HTTP GET request.
uint64_t abs_value_us
The actual value.
struct GNUNET_TIME_Absolute next_receive
Absolute time when to receive data again Used for receive throttling.
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_delayed(struct GNUNET_TIME_Relative delay, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay.
Definition: scheduler.c:1269
Session handle for connections.
const char * GNUNET_STRINGS_relative_time_to_string(struct GNUNET_TIME_Relative delta, int do_round)
Give relative time in human-readable fancy format.
Definition: strings.c:557
struct GNUNET_MessageStreamTokenizer * GNUNET_MST_create(GNUNET_MessageTokenizerCallback cb, void *cb_cls)
Create a message stream tokenizer.
Definition: mst.c:85
int GNUNET_MST_from_buffer(struct GNUNET_MessageStreamTokenizer *mst, const char *buf, size_t size, int purge, int one_shot)
Add incoming data to the receive buffer and call the callback for all complete messages.
Definition: mst.c:114
struct GNUNET_TIME_Absolute GNUNET_TIME_absolute_get(void)
Get the current time.
Definition: time.c:86
static unsigned int size
Size of the "table".
Definition: peer.c:67
struct GNUNET_PeerIdentity peer
For which peer is this an address?
Time for absolute times used by GNUnet, in microseconds.
struct GNUNET_TIME_Relative GNUNET_TIME_absolute_get_difference(struct GNUNET_TIME_Absolute start, struct GNUNET_TIME_Absolute end)
Compute the time difference between the given start and end times.
Definition: time.c:248
#define LOG(kind,...)
CURL * easyhandle
The curl easy handle.
const char * GNUNET_i2s(const struct GNUNET_PeerIdentity *pid)
Convert a peer identity to a string (for printing debug messages).
Time for relative time used by GNUnet, in microseconds.
uint16_t len
length of data (which is always a uint32_t, but presumably this can be used to specify that fewer byt...
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:972
Here is the call graph for this function:
Here is the caller graph for this function:

◆ client_connect()

static int client_connect ( struct GNUNET_ATS_Session s)
static

Connect both PUT and GET request for a session.

Parameters
sthe session to connect
Returns
GNUNET_OK on success, GNUNET_SYSERR otherwise

Definition at line 1875 of file plugin_transport_http_client.c.

References GNUNET_HELLO_Address::address, GNUNET_ATS_Session::address, GNUNET_HELLO_Address::address_length, client_connect_get(), client_connect_put(), HTTP_Client_Plugin::client_perform_task, client_run(), HTTP_Client_Plugin::cur_requests, RequestHandle::easyhandle, HTTP_Client_Plugin::emulate_xhr, HTTP_Client_Plugin::env, GNUNET_ATS_Session::get, GNUNET_asprintf(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_i2s(), GNUNET_i2s_full(), GNUNET_NO, GNUNET_OK, GNUNET_SCHEDULER_add_now(), GNUNET_SCHEDULER_cancel(), GNUNET_STATISTICS_set(), GNUNET_SYSERR, GNUNET_YES, H_TMP_DISCONNECTED, http_common_plugin_address_to_string(), http_common_plugin_address_to_url(), HTTP_STAT_STR_CONNECTIONS, HTTP_Client_Plugin::last_tag, LOG, GNUNET_TRANSPORT_PluginEnvironment::my_identity, GNUNET_HELLO_Address::peer, plugin, GNUNET_ATS_Session::plugin, HTTP_Client_Plugin::protocol, GNUNET_ATS_Session::put, res, RequestHandle::state, GNUNET_TRANSPORT_PluginEnvironment::stats, and GNUNET_ATS_Session::url.

Referenced by http_client_plugin_get_session().

1876 {
1877  struct HTTP_Client_Plugin *plugin = s->plugin;
1878  int res = GNUNET_OK;
1879 
1880  /* create url */
1881  if (NULL ==
1883  s->address->address,
1884  s->address->address_length))
1885  {
1887  "Invalid address peer `%s'\n",
1888  GNUNET_i2s (&s->address->peer));
1889  return GNUNET_SYSERR;
1890  }
1891 
1892  GNUNET_asprintf (&s->url,
1893  "%s/%s;%u",
1895  s->address->address,
1896  s->address->address_length),
1897  GNUNET_i2s_full (plugin->env->my_identity),
1898  plugin->last_tag);
1899 
1900  plugin->last_tag++;
1902  "Initiating outbound session peer `%s' using address `%s'\n",
1903  GNUNET_i2s (&s->address->peer), s->url);
1904 
1905  if (GNUNET_SYSERR == client_connect_get (s))
1906  return GNUNET_SYSERR;
1907  /* If we are emulating an XHR client then delay sending a PUT request until
1908  * there is something to send.
1909  */
1910  if (GNUNET_YES == plugin->emulate_xhr)
1911  {
1913  }
1914  else if (GNUNET_SYSERR == client_connect_put (s))
1915  return GNUNET_SYSERR;
1916 
1918  "Session %p: connected with GET %p and PUT %p\n",
1919  s, s->get.easyhandle,
1920  s->put.easyhandle);
1921  /* Perform connect */
1922  GNUNET_STATISTICS_set (plugin->env->stats,
1924  plugin->cur_requests,
1925  GNUNET_NO);
1926  /* Re-schedule since handles have changed */
1927  if (NULL != plugin->client_perform_task)
1928  {
1930  plugin->client_perform_task = NULL;
1931  }
1932 
1933  /* Schedule task to run immediately */
1935  plugin);
1936  return res;
1937 }
size_t address_length
Number of bytes in address.
const void * address
Binary representation of the address (plugin-specific).
uint32_t last_tag
Last used unique HTTP connection tag.
struct Plugin * plugin
Pointer to the global plugin struct.
const char * http_common_plugin_address_to_url(void *cls, const void *addr, size_t addrlen)
FIXME.
static int client_connect_get(struct GNUNET_ATS_Session *s)
Connect GET request.
struct RequestHandle put
Handle for the HTTP PUT request.
const struct GNUNET_PeerIdentity * my_identity
Identity of this peer.
const char * GNUNET_i2s_full(const struct GNUNET_PeerIdentity *pid)
Convert a peer identity to a string (for printing debug messages).
static void client_run(void *cls)
Task performing curl operations.
struct GNUNET_HELLO_Address * address
Address.
struct GNUNET_TRANSPORT_PluginEnvironment * env
Our environment.
struct RequestHandle get
Handle for the HTTP GET request.
Temporarily disconnected.
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_now(GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run as soon as possible.
Definition: scheduler.c:1296
void GNUNET_STATISTICS_set(struct GNUNET_STATISTICS_Handle *handle, const char *name, uint64_t value, int make_persistent)
Set statistic value for the peer.
static int client_connect_put(struct GNUNET_ATS_Session *s)
Connect a HTTP put request.
static int res
int int GNUNET_asprintf(char **buf, const char *format,...) __attribute__((format(printf
Like asprintf, just portable.
char * url
The URL to connect to.
int emulate_xhr
Should we emulate an XHR client for testing?
struct GNUNET_PeerIdentity peer
For which peer is this an address?
Encapsulation of all of the state of the plugin.
const char * http_common_plugin_address_to_string(const char *plugin, const void *addr, size_t addrlen)
Function called for a quick conversion of the binary address to a numeric address.
struct GNUNET_SCHEDULER_Task * client_perform_task
curl perform task
unsigned int cur_requests
Current number of sockets the plugin can use Each http connections are two requests.
#define HTTP_STAT_STR_CONNECTIONS
struct GNUNET_STATISTICS_Handle * stats
Handle for reporting statistics.
struct Plugin * plugin
#define LOG(kind,...)
enum HTTP_PUT_REQUEST_STATE state
Current state of this request.
CURL * easyhandle
The curl easy handle.
const char * GNUNET_i2s(const struct GNUNET_PeerIdentity *pid)
Convert a peer identity to a string (for printing debug messages).
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:972
Here is the call graph for this function:
Here is the caller graph for this function:

◆ http_client_plugin_get_network()

static enum GNUNET_NetworkType http_client_plugin_get_network ( void *  cls,
struct GNUNET_ATS_Session session 
)
static

Function obtain the network type for a session.

Parameters
clsclosure (struct Plugin*)
sessionthe session
Returns
the network type

Definition at line 1948 of file plugin_transport_http_client.c.

References GNUNET_ATS_Session::scope.

Referenced by libgnunet_plugin_transport_http_client_init().

1950 {
1951  return session->scope;
1952 }
enum GNUNET_NetworkType scope
ATS network type.
Here is the caller graph for this function:

◆ http_client_plugin_get_network_for_address()

static enum GNUNET_NetworkType http_client_plugin_get_network_for_address ( void *  cls,
const struct GNUNET_HELLO_Address address 
)
static

Function obtain the network type for an address.

Parameters
clsclosure (struct Plugin *)
addressthe address
Returns
the network type

Definition at line 1963 of file plugin_transport_http_client.c.

References HTTP_Client_Plugin::env, http_common_get_network_for_address(), and plugin.

Referenced by libgnunet_plugin_transport_http_client_init().

1966 {
1967  struct HTTP_Client_Plugin *plugin = cls;
1968 
1969  return http_common_get_network_for_address (plugin->env,
1970  address);
1971 }
struct GNUNET_TRANSPORT_PluginEnvironment * env
Our environment.
Encapsulation of all of the state of the plugin.
enum GNUNET_NetworkType http_common_get_network_for_address(struct GNUNET_TRANSPORT_PluginEnvironment *env, const struct GNUNET_HELLO_Address *address)
Function obtain the network type for an address.
struct Plugin * plugin
Here is the call graph for this function:
Here is the caller graph for this function:

◆ client_session_timeout()

static void client_session_timeout ( void *  cls)
static

Session was idle, so disconnect it.

Parameters
clsthe struct GNUNET_ATS_Session of the idle session

Definition at line 1980 of file plugin_transport_http_client.c.

References GNUNET_assert, GNUNET_OK, GNUNET_SCHEDULER_add_delayed(), GNUNET_STRINGS_relative_time_to_string(), GNUNET_TIME_absolute_get_remaining(), GNUNET_TRANSPORT_SS_UPDATE, GNUNET_YES, http_client_plugin_session_disconnect(), HTTP_CLIENT_SESSION_TIMEOUT, LOG, notify_session_monitor(), GNUNET_ATS_Session::plugin, GNUNET_TIME_Relative::rel_value_us, GNUNET_ATS_Session::timeout, TIMEOUT_LOG, and GNUNET_ATS_Session::timeout_task.

Referenced by http_client_plugin_get_session().

1981 {
1982  struct GNUNET_ATS_Session *s = cls;
1983  struct GNUNET_TIME_Relative left;
1984 
1985  s->timeout_task = NULL;
1987  if (0 != left.rel_value_us)
1988  {
1989  /* not actually our turn yet, but let's at least update
1990  the monitor, it may think we're about to die ... */
1992  s,
1996  s);
1997  return;
1998  }
1999  LOG (TIMEOUT_LOG,
2000  "Session %p was idle for %s, disconnecting\n",
2001  s,
2003  GNUNET_YES));
2006  s));
2007 }
#define HTTP_CLIENT_SESSION_TIMEOUT
static int http_client_plugin_session_disconnect(void *cls, struct GNUNET_ATS_Session *s)
Disconnect a session.
struct GNUNET_SCHEDULER_Task * timeout_task
Session timeout task.
struct Plugin * plugin
Pointer to the global plugin struct.
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
static void client_session_timeout(void *cls)
Session was idle, so disconnect it.
struct GNUNET_TIME_Absolute timeout
When does this session time out.
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_delayed(struct GNUNET_TIME_Relative delay, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay.
Definition: scheduler.c:1269
static void notify_session_monitor(struct HTTP_Client_Plugin *plugin, struct GNUNET_ATS_Session *session, enum GNUNET_TRANSPORT_SessionState state)
If a session monitor is attached, notify it about the new session state.
Session handle for connections.
const char * GNUNET_STRINGS_relative_time_to_string(struct GNUNET_TIME_Relative delta, int do_round)
Give relative time in human-readable fancy format.
Definition: strings.c:557
This is just an update about the session, the state did not change.
struct GNUNET_TIME_Relative GNUNET_TIME_absolute_get_remaining(struct GNUNET_TIME_Absolute future)
Given a timestamp in the future, how much time remains until then?
Definition: time.c:232
#define LOG(kind,...)
#define TIMEOUT_LOG
Time for relative time used by GNUnet, in microseconds.
Here is the call graph for this function:
Here is the caller graph for this function:

◆ http_client_plugin_get_session()

static struct GNUNET_ATS_Session* http_client_plugin_get_session ( void *  cls,
const struct GNUNET_HELLO_Address address 
)
static

Creates a new outbound session the transport service will use to send data to the peer.

Parameters
clsthe plugin
addressthe address
Returns
the session or NULL of max connections exceeded

Definition at line 2019 of file plugin_transport_http_client.c.

References GNUNET_HELLO_Address::address, GNUNET_ATS_Session::address, GNUNET_HELLO_Address::address_length, client_connect(), client_delete_session(), client_lookup_session(), client_session_timeout(), GNUNET_TRANSPORT_PluginEnvironment::cls, HTTP_Client_Plugin::cur_requests, HTTP_Client_Plugin::env, GNUNET_TRANSPORT_PluginEnvironment::get_address_type, GNUNET_assert, GNUNET_break, GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE, GNUNET_CONTAINER_multipeermap_put(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_ERROR, GNUNET_ERROR_TYPE_WARNING, GNUNET_free, GNUNET_HELLO_address_copy(), GNUNET_i2s(), GNUNET_new, GNUNET_NO, GNUNET_NT_UNSPECIFIED, GNUNET_NT_WAN, GNUNET_SCHEDULER_add_delayed(), GNUNET_SYSERR, GNUNET_TIME_relative_to_absolute(), GNUNET_TRANSPORT_SS_INIT, GNUNET_TRANSPORT_SS_UP, GNUNET_YES, H_NOT_CONNECTED, HTTP_CLIENT_SESSION_TIMEOUT, http_common_plugin_address_to_string(), http_common_socket_from_address(), LOG, HTTP_Client_Plugin::max_requests, notify_session_monitor(), GNUNET_HELLO_Address::peer, plugin, GNUNET_ATS_Session::plugin, HTTP_Client_Plugin::protocol, GNUNET_ATS_Session::put, res, GNUNET_ATS_Session::scope, HTTP_Client_Plugin::sessions, RequestHandle::state, GNUNET_ATS_Session::timeout, and GNUNET_ATS_Session::timeout_task.

Referenced by libgnunet_plugin_transport_http_client_init().

2021 {
2022  struct HTTP_Client_Plugin *plugin = cls;
2023  struct GNUNET_ATS_Session *s;
2024  struct sockaddr *sa;
2025  enum GNUNET_NetworkType net_type;
2026  size_t salen = 0;
2027  int res;
2028 
2029  GNUNET_assert (NULL != address->address);
2030 
2031  /* find existing session */
2032  s = client_lookup_session (plugin, address);
2033  if (NULL != s)
2034  return s;
2035 
2036  /* create a new session */
2037  if (plugin->max_requests <= plugin->cur_requests)
2038  {
2040  "Maximum number of requests (%u) reached: "
2041  "cannot connect to peer `%s'\n",
2042  plugin->max_requests,
2043  GNUNET_i2s (&address->peer));
2044  return NULL;
2045  }
2046 
2047  /* Determine network location */
2048  net_type = GNUNET_NT_UNSPECIFIED;
2050  address->address_length,
2051  &res);
2052  if (GNUNET_SYSERR == res)
2053  return NULL;
2054  if (GNUNET_YES == res)
2055  {
2056  GNUNET_assert (NULL != sa);
2057  if (AF_INET == sa->sa_family)
2058  {
2059  salen = sizeof(struct sockaddr_in);
2060  }
2061  else if (AF_INET6 == sa->sa_family)
2062  {
2063  salen = sizeof(struct sockaddr_in6);
2064  }
2065  net_type = plugin->env->get_address_type (plugin->env->cls, sa, salen);
2066  GNUNET_free (sa);
2067  }
2068  else if (GNUNET_NO == res)
2069  {
2070  /* Cannot convert to sockaddr -> is external hostname */
2071  net_type = GNUNET_NT_WAN;
2072  }
2073  if (GNUNET_NT_UNSPECIFIED == net_type)
2074  {
2075  GNUNET_break (0);
2076  return NULL;
2077  }
2078 
2079  s = GNUNET_new (struct GNUNET_ATS_Session);
2080  s->plugin = plugin;
2081  s->address = GNUNET_HELLO_address_copy (address);
2082  s->scope = net_type;
2083 
2084  s->put.state = H_NOT_CONNECTED;
2088  s);
2090  "Created new session %p for `%s' address `%s''\n",
2091  s,
2093  s->address->address,
2094  s->address->address_length),
2095  GNUNET_i2s (&s->address->peer));
2096 
2097  /* add new session */
2099  &s->address->peer,
2100  s,
2102  /* initiate new connection */
2103  if (GNUNET_SYSERR == client_connect (s))
2104  {
2106  "Cannot connect to peer `%s' address `%s''\n",
2108  s->address->address,
2109  s->address->address_length),
2110  GNUNET_i2s (&s->address->peer));
2112  return NULL;
2113  }
2114  notify_session_monitor (plugin,
2115  s,
2117  notify_session_monitor (plugin,
2118  s,
2119  GNUNET_TRANSPORT_SS_UP); /* or handshake? */
2120  return s;
2121 }
size_t address_length
Number of bytes in address.
#define HTTP_CLIENT_SESSION_TIMEOUT
const void * address
Binary representation of the address (plugin-specific).
struct GNUNET_SCHEDULER_Task * timeout_task
Session timeout task.
struct Plugin * plugin
Pointer to the global plugin struct.
GNUNET_TRANSPORT_AddressToType get_address_type
Function that will be called to figure if an address is an loopback, LAN, WAN etc.
struct GNUNET_TIME_Absolute GNUNET_TIME_relative_to_absolute(struct GNUNET_TIME_Relative rel)
Convert relative time to an absolute time in the future.
Definition: time.c:181
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
struct RequestHandle put
Handle for the HTTP PUT request.
static void client_session_timeout(void *cls)
Session was idle, so disconnect it.
struct GNUNET_TIME_Absolute timeout
When does this session time out.
Wide area network (i.e.
Definition: gnunet_nt_lib.h:55
#define GNUNET_new(type)
Allocate a struct or union of the given type.
struct GNUNET_HELLO_Address * address
Address.
struct GNUNET_TRANSPORT_PluginEnvironment * env
Our environment.
GNUNET_NetworkType
Types of networks (with separate quotas) we support.
Definition: gnunet_nt_lib.h:35
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_delayed(struct GNUNET_TIME_Relative delay, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay.
Definition: scheduler.c:1269
static void notify_session_monitor(struct HTTP_Client_Plugin *plugin, struct GNUNET_ATS_Session *session, enum GNUNET_TRANSPORT_SessionState state)
If a session monitor is attached, notify it about the new session state.
void * cls
Closure for the various callbacks.
static struct GNUNET_ATS_Session * client_lookup_session(struct HTTP_Client_Plugin *plugin, const struct GNUNET_HELLO_Address *address)
Check if a sessions exists for an specific address.
Session handle for connections.
static int res
static int client_connect(struct GNUNET_ATS_Session *s)
Connect both PUT and GET request for a session.
struct GNUNET_CONTAINER_MultiPeerMap * sessions
Open sessions.
enum GNUNET_NetworkType scope
ATS network type.
struct GNUNET_PeerIdentity peer
For which peer is this an address?
Just created, not yet connected.
Encapsulation of all of the state of the plugin.
Allow multiple values with the same key.
const char * http_common_plugin_address_to_string(const char *plugin, const void *addr, size_t addrlen)
Function called for a quick conversion of the binary address to a numeric address.
int GNUNET_CONTAINER_multipeermap_put(struct GNUNET_CONTAINER_MultiPeerMap *map, const struct GNUNET_PeerIdentity *key, void *value, enum GNUNET_CONTAINER_MultiHashMapOption opt)
Store a key-value pair in the map.
struct sockaddr * http_common_socket_from_address(const void *addr, size_t addrlen, int *res)
Create a socketaddr from a HTTP address.
unsigned int cur_requests
Current number of sockets the plugin can use Each http connections are two requests.
struct GNUNET_HELLO_Address * GNUNET_HELLO_address_copy(const struct GNUNET_HELLO_Address *address)
Copy an address struct.
Definition: address.c:109
The session was created (first call for each session object).
unsigned int max_requests
Maximum number of sockets the plugin can use Each http connections are two requests.
struct Plugin * plugin
#define LOG(kind,...)
enum HTTP_PUT_REQUEST_STATE state
Current state of this request.
const char * GNUNET_i2s(const struct GNUNET_PeerIdentity *pid)
Convert a peer identity to a string (for printing debug messages).
#define GNUNET_free(ptr)
Wrapper around free.
Category of last resort.
Definition: gnunet_nt_lib.h:40
static void client_delete_session(struct GNUNET_ATS_Session *s)
Delete session s.
Here is the call graph for this function:
Here is the caller graph for this function:

◆ client_start()

static int client_start ( struct HTTP_Client_Plugin plugin)
static

Setup http_client plugin.

Parameters
pluginthe plugin handle
Returns
GNUNET_OK on success, GNUNET_SYSERR on error

Definition at line 2131 of file plugin_transport_http_client.c.

References _, HTTP_Client_Plugin::curl_multi_handle, GNUNET_ERROR_TYPE_ERROR, GNUNET_OK, GNUNET_SYSERR, LOG, and HTTP_Client_Plugin::name.

Referenced by libgnunet_plugin_transport_http_client_init().

2132 {
2133  curl_global_init (CURL_GLOBAL_ALL);
2134  plugin->curl_multi_handle = curl_multi_init ();
2135 
2136  if (NULL == plugin->curl_multi_handle)
2137  {
2139  _ (
2140  "Could not initialize curl multi handle, failed to start %s plugin!\n"),
2141  plugin->name);
2142  return GNUNET_SYSERR;
2143  }
2144  return GNUNET_OK;
2145 }
#define _(String)
GNU gettext support macro.
Definition: platform.h:178
CURLM * curl_multi_handle
cURL Multihandle
#define LOG(kind,...)
Here is the caller graph for this function:

◆ http_client_plugin_address_suggested()

static int http_client_plugin_address_suggested ( void *  cls,
const void *  addr,
size_t  addrlen 
)
static

Another peer has suggested an address for this peer and transport plugin.

Check that this could be a valid address. If so, consider adding it to the list of addresses.

Parameters
clsclosure with the struct Plugin
addrpointer to the address
addrlenlength of addr
Returns
GNUNET_OK if this is a plausible address for this peer and transport; always returns GNUNET_NO (this is the client!)

Definition at line 2161 of file plugin_transport_http_client.c.

References GNUNET_NO.

Referenced by libgnunet_plugin_transport_http_client_init().

2164 {
2165  /* A HTTP/S client does not have any valid address so:*/
2166  return GNUNET_NO;
2167 }
Here is the caller graph for this function:

◆ libgnunet_plugin_transport_http_client_done()

void* libgnunet_plugin_transport_http_client_done ( void *  cls)

Exit point from the plugin.

Parameters
clsapi as closure
Returns
NULL

Definition at line 2177 of file plugin_transport_http_client.c.

References _, HTTP_Client_Plugin::client_perform_task, GNUNET_TRANSPORT_PluginFunctions::cls, HTTP_Client_Plugin::curl_multi_handle, destroy_session_cb(), GNUNET_CONTAINER_multipeermap_destroy(), GNUNET_CONTAINER_multipeermap_iterate(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_free, GNUNET_SCHEDULER_cancel(), LOG, HTTP_Client_Plugin::name, plugin, HTTP_Client_Plugin::proxy_hostname, HTTP_Client_Plugin::proxy_password, HTTP_Client_Plugin::proxy_username, and HTTP_Client_Plugin::sessions.

2178 {
2179  struct GNUNET_TRANSPORT_PluginFunctions *api = cls;
2180  struct HTTP_Client_Plugin *plugin = api->cls;
2181 
2182  if (NULL == api->cls)
2183  {
2184  /* Stub shutdown */
2185  GNUNET_free (api);
2186  return NULL;
2187  }
2189  _ ("Shutting down plugin `%s'\n"),
2190  plugin->name);
2193  plugin);
2194  if (NULL != plugin->client_perform_task)
2195  {
2197  plugin->client_perform_task = NULL;
2198  }
2199  if (NULL != plugin->curl_multi_handle)
2200  {
2201  curl_multi_cleanup (plugin->curl_multi_handle);
2202  plugin->curl_multi_handle = NULL;
2203  }
2204  curl_global_cleanup ();
2206  _ ("Shutdown for plugin `%s' complete\n"),
2207  plugin->name);
2209  GNUNET_free (plugin->proxy_hostname);
2210  GNUNET_free (plugin->proxy_username);
2211  GNUNET_free (plugin->proxy_password);
2212  GNUNET_free (plugin);
2213  GNUNET_free (api);
2214  return NULL;
2215 }
char * proxy_username
Username for the proxy server.
Each plugin is required to return a pointer to a struct of this type as the return value from its ent...
void GNUNET_CONTAINER_multipeermap_destroy(struct GNUNET_CONTAINER_MultiPeerMap *map)
Destroy a hash map.
#define _(String)
GNU gettext support macro.
Definition: platform.h:178
void * cls
Closure for all of the callbacks.
static int destroy_session_cb(void *cls, const struct GNUNET_PeerIdentity *peer, void *value)
Callback to destroys all sessions on exit.
struct GNUNET_CONTAINER_MultiPeerMap * sessions
Open sessions.
Encapsulation of all of the state of the plugin.
int GNUNET_CONTAINER_multipeermap_iterate(struct GNUNET_CONTAINER_MultiPeerMap *map, GNUNET_CONTAINER_PeerMapIterator it, void *it_cls)
Iterate over all entries in the map.
struct GNUNET_SCHEDULER_Task * client_perform_task
curl perform task
CURLM * curl_multi_handle
cURL Multihandle
struct Plugin * plugin
char * proxy_hostname
Proxy configuration: hostname or ip of the proxy server.
#define LOG(kind,...)
char * proxy_password
Password for the proxy server.
#define GNUNET_free(ptr)
Wrapper around free.
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:972
Here is the call graph for this function:

◆ client_configure_plugin()

static int client_configure_plugin ( struct HTTP_Client_Plugin plugin)
static

Configure plugin.

Parameters
pluginthe plugin handle
Returns
GNUNET_OK on success, GNUNET_SYSERR on failure

Definition at line 2225 of file plugin_transport_http_client.c.

References _, GNUNET_TRANSPORT_PluginEnvironment::cfg, HTTP_Client_Plugin::emulate_xhr, HTTP_Client_Plugin::env, GNUNET_CONFIGURATION_get_value_number(), GNUNET_CONFIGURATION_get_value_string(), GNUNET_CONFIGURATION_get_value_yesno(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_ERROR, GNUNET_free, GNUNET_NO, GNUNET_OK, GNUNET_STRINGS_utf8_toupper(), GNUNET_SYSERR, LOG, HTTP_Client_Plugin::max_requests, HTTP_Client_Plugin::name, HTTP_Client_Plugin::proxy_hostname, HTTP_Client_Plugin::proxy_password, proxy_type, HTTP_Client_Plugin::proxy_use_httpproxytunnel, HTTP_Client_Plugin::proxy_username, and HTTP_Client_Plugin::proxytype.

Referenced by libgnunet_plugin_transport_http_client_init().

2226 {
2227  unsigned long long max_requests;
2228  char *proxy_type;
2229 
2230  /* Optional parameters */
2231  if (GNUNET_OK !=
2233  plugin->name,
2234  "MAX_CONNECTIONS",
2235  &max_requests))
2236  max_requests = 128;
2237  plugin->max_requests = max_requests;
2238 
2240  _ ("Maximum number of requests is %u\n"),
2241  plugin->max_requests);
2242 
2243  /* Read proxy configuration */
2244  if (GNUNET_OK ==
2246  plugin->name,
2247  "PROXY",
2248  &plugin->proxy_hostname))
2249  {
2251  "Found proxy host: `%s'\n",
2252  plugin->proxy_hostname);
2253  /* proxy username */
2254  if (GNUNET_OK ==
2256  plugin->name,
2257  "PROXY_USERNAME",
2258  &plugin->proxy_username))
2259  {
2261  "Found proxy username name: `%s'\n",
2262  plugin->proxy_username);
2263  }
2264 
2265  /* proxy password */
2266  if (GNUNET_OK ==
2268  plugin->name,
2269  "PROXY_PASSWORD",
2270  &plugin->proxy_password))
2271  {
2273  "Found proxy password name: `%s'\n",
2274  plugin->proxy_password);
2275  }
2276 
2277  /* proxy type */
2278  if (GNUNET_OK ==
2280  plugin->name,
2281  "PROXY_TYPE",
2282  &proxy_type))
2283  {
2284  GNUNET_STRINGS_utf8_toupper (proxy_type, proxy_type);
2285 
2286  if (0 == strcmp (proxy_type, "HTTP"))
2287  plugin->proxytype = CURLPROXY_HTTP;
2288  else if (0 == strcmp (proxy_type, "SOCKS4"))
2289  plugin->proxytype = CURLPROXY_SOCKS4;
2290  else if (0 == strcmp (proxy_type, "SOCKS5"))
2291  plugin->proxytype = CURLPROXY_SOCKS5;
2292  else if (0 == strcmp (proxy_type, "SOCKS4A"))
2293  plugin->proxytype = CURLPROXY_SOCKS4A;
2294  else if (0 == strcmp (proxy_type, "SOCKS5_HOSTNAME "))
2295  plugin->proxytype = CURLPROXY_SOCKS5_HOSTNAME;
2296  else
2297  {
2299  _ (
2300  "Invalid proxy type: `%s', disabling proxy! Check configuration!\n"),
2301  proxy_type);
2302 
2303  GNUNET_free (proxy_type);
2304  GNUNET_free (plugin->proxy_hostname);
2305  plugin->proxy_hostname = NULL;
2306  GNUNET_free (plugin->proxy_username);
2307  plugin->proxy_username = NULL;
2308  GNUNET_free (plugin->proxy_password);
2309  plugin->proxy_password = NULL;
2310 
2311  return GNUNET_SYSERR;
2312  }
2313 
2315  "Found proxy type: `%s'\n",
2316  proxy_type);
2317  }
2318 
2319  /* proxy http tunneling */
2322  plugin->name,
2323  "PROXY_HTTP_TUNNELING");
2326 
2327  GNUNET_free (proxy_type);
2328  }
2329 
2330  /* Should we emulate an XHR client for testing? */
2331  plugin->emulate_xhr
2333  plugin->name,
2334  "EMULATE_XHR");
2335  return GNUNET_OK;
2336 }
curl_proxytype proxytype
Type of proxy server:
char * proxy_username
Username for the proxy server.
static curl_proxytype proxy_type
Proxy type we are using (can be NULL).
enum GNUNET_GenericReturnValue GNUNET_CONFIGURATION_get_value_number(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option, unsigned long long *number)
Get a configuration value that should be a number.
struct GNUNET_TRANSPORT_PluginEnvironment * env
Our environment.
enum GNUNET_GenericReturnValue GNUNET_CONFIGURATION_get_value_string(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option, char **value)
Get a configuration value that should be a string.
#define _(String)
GNU gettext support macro.
Definition: platform.h:178
int proxy_use_httpproxytunnel
Use proxy tunneling: Tunnel all operations through a given HTTP instead of have the proxy evaluate th...
void GNUNET_STRINGS_utf8_toupper(const char *input, char *output)
Convert the utf-8 input string to upper case.
Definition: strings.c:463
int emulate_xhr
Should we emulate an XHR client for testing?
const struct GNUNET_CONFIGURATION_Handle * cfg
Configuration to use.
unsigned int max_requests
Maximum number of sockets the plugin can use Each http connections are two requests.
enum GNUNET_GenericReturnValue GNUNET_CONFIGURATION_get_value_yesno(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option)
Get a configuration value that should be in a set of "YES" or "NO".
char * proxy_hostname
Proxy configuration: hostname or ip of the proxy server.
#define LOG(kind,...)
char * proxy_password
Password for the proxy server.
#define GNUNET_free(ptr)
Wrapper around free.
Here is the call graph for this function:
Here is the caller graph for this function:

◆ http_client_plugin_address_to_string()

static const char* http_client_plugin_address_to_string ( void *  cls,
const void *  addr,
size_t  addrlen 
)
static

Function to convert an address to a human-readable string.

Parameters
clsclosure
addraddress to convert
addrlenaddress length
Returns
res string if conversion was successful, NULL otherwise

Definition at line 2348 of file plugin_transport_http_client.c.

References http_common_plugin_address_to_string(), and PLUGIN_NAME.

Referenced by libgnunet_plugin_transport_http_client_init().

2351 {
2353  addr,
2354  addrlen);
2355 }
const char * http_common_plugin_address_to_string(const char *plugin, const void *addr, size_t addrlen)
Function called for a quick conversion of the binary address to a numeric address.
#define PLUGIN_NAME
Here is the call graph for this function:
Here is the caller graph for this function:

◆ http_client_plugin_update_session_timeout()

static void http_client_plugin_update_session_timeout ( void *  cls,
const struct GNUNET_PeerIdentity peer,
struct GNUNET_ATS_Session session 
)
static

Function that will be called whenever the transport service wants to notify the plugin that a session is still active and in use and therefore the session timeout for this session has to be updated.

Parameters
clsclosure
peerwhich peer was the session for
sessionwhich session is being updated

Definition at line 2368 of file plugin_transport_http_client.c.

References client_reschedule_session_timeout().

Referenced by libgnunet_plugin_transport_http_client_init().

2372 {
2374 }
static void client_reschedule_session_timeout(struct GNUNET_ATS_Session *s)
Increment session timeout due to activity for session s.
Here is the call graph for this function:
Here is the caller graph for this function:

◆ http_client_plugin_update_inbound_delay()

static void http_client_plugin_update_inbound_delay ( void *  cls,
const struct GNUNET_PeerIdentity peer,
struct GNUNET_ATS_Session s,
struct GNUNET_TIME_Relative  delay 
)
static

Function that will be called whenever the transport service wants to notify the plugin that the inbound quota changed and that the plugin should update it's delay for the next receive value.

Parameters
clsclosure
peerwhich peer was the session for
swhich session is being updated
delaynew delay to use for receiving

Definition at line 2388 of file plugin_transport_http_client.c.

References client_wake_up(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_NO, GNUNET_SCHEDULER_add_delayed(), GNUNET_SCHEDULER_cancel(), GNUNET_STRINGS_relative_time_to_string(), GNUNET_TIME_relative_to_absolute(), LOG, GNUNET_ATS_Session::next_receive, and GNUNET_ATS_Session::recv_wakeup_task.

Referenced by libgnunet_plugin_transport_http_client_init().

2392 {
2395  "New inbound delay %s\n",
2397  GNUNET_NO));
2398  if (s->recv_wakeup_task != NULL)
2399  {
2401  s->recv_wakeup_task
2403  &client_wake_up,
2404  s);
2405  }
2406 }
struct GNUNET_SCHEDULER_Task * recv_wakeup_task
Task to wake up client receive handle when receiving is allowed again.
struct GNUNET_TIME_Absolute GNUNET_TIME_relative_to_absolute(struct GNUNET_TIME_Relative rel)
Convert relative time to an absolute time in the future.
Definition: time.c:181
static void client_wake_up(void *cls)
Wake up a curl handle which was suspended.
struct GNUNET_TIME_Absolute next_receive
Absolute time when to receive data again Used for receive throttling.
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_delayed(struct GNUNET_TIME_Relative delay, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay.
Definition: scheduler.c:1269
const char * GNUNET_STRINGS_relative_time_to_string(struct GNUNET_TIME_Relative delta, int do_round)
Give relative time in human-readable fancy format.
Definition: strings.c:557
#define LOG(kind,...)
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:972
Here is the call graph for this function:
Here is the caller graph for this function:

◆ send_session_info_iter()

static int send_session_info_iter ( void *  cls,
const struct GNUNET_PeerIdentity peer,
void *  value 
)
static

Return information about the given session to the monitor callback.

Parameters
clsthe struct Plugin with the monitor callback (sic)
peerpeer we send information about
valueour struct GNUNET_ATS_Session to send information about
Returns
GNUNET_OK (continue to iterate)

Definition at line 2419 of file plugin_transport_http_client.c.

References GNUNET_OK, GNUNET_TRANSPORT_SS_INIT, GNUNET_TRANSPORT_SS_UP, notify_session_monitor(), plugin, and value.

Referenced by http_client_plugin_setup_monitor(), template_plugin_setup_monitor(), and template_plugin_update_session_timeout().

2422 {
2423  struct HTTP_Client_Plugin *plugin = cls;
2424  struct GNUNET_ATS_Session *session = value;
2425 
2426  notify_session_monitor (plugin,
2427  session,
2429  notify_session_monitor (plugin,
2430  session,
2431  GNUNET_TRANSPORT_SS_UP); /* FIXME: or handshake? */
2432  return GNUNET_OK;
2433 }
static void notify_session_monitor(struct HTTP_Client_Plugin *plugin, struct GNUNET_ATS_Session *session, enum GNUNET_TRANSPORT_SessionState state)
If a session monitor is attached, notify it about the new session state.
static char * value
Value of the record to add/remove.
Session handle for connections.
Encapsulation of all of the state of the plugin.
The session was created (first call for each session object).
struct Plugin * plugin
Here is the call graph for this function:
Here is the caller graph for this function:

◆ http_client_plugin_setup_monitor()

static void http_client_plugin_setup_monitor ( void *  cls,
GNUNET_TRANSPORT_SessionInfoCallback  sic,
void *  sic_cls 
)
static

Begin monitoring sessions of a plugin.

There can only be one active monitor per plugin (i.e. if there are multiple monitors, the transport service needs to multiplex the generated events over all of them).

Parameters
clsclosure of the plugin
siccallback to invoke, NULL to disable monitor; plugin will being by iterating over all active sessions immediately and then enter monitor mode
sic_clsclosure for sic

Definition at line 2449 of file plugin_transport_http_client.c.

References GNUNET_CONTAINER_multipeermap_iterate(), plugin, send_session_info_iter(), HTTP_Client_Plugin::sessions, HTTP_Client_Plugin::sic, and HTTP_Client_Plugin::sic_cls.

Referenced by libgnunet_plugin_transport_http_client_init().

2452 {
2453  struct HTTP_Client_Plugin *plugin = cls;
2454 
2455  plugin->sic = sic;
2456  plugin->sic_cls = sic_cls;
2457  if (NULL != sic)
2458  {
2461  plugin);
2462  /* signal end of first iteration */
2463  sic (sic_cls, NULL, NULL);
2464  }
2465 }
static int send_session_info_iter(void *cls, const struct GNUNET_PeerIdentity *peer, void *value)
Return information about the given session to the monitor callback.
GNUNET_TRANSPORT_SessionInfoCallback sic
Function to call about session status changes.
struct GNUNET_CONTAINER_MultiPeerMap * sessions
Open sessions.
void * sic_cls
Closure for sic.
Encapsulation of all of the state of the plugin.
int GNUNET_CONTAINER_multipeermap_iterate(struct GNUNET_CONTAINER_MultiPeerMap *map, GNUNET_CONTAINER_PeerMapIterator it, void *it_cls)
Iterate over all entries in the map.
struct Plugin * plugin
Here is the call graph for this function:
Here is the caller graph for this function:

◆ libgnunet_plugin_transport_http_client_init()

void* libgnunet_plugin_transport_http_client_init ( void *  cls)

Entry point for the plugin.

Definition at line 2472 of file plugin_transport_http_client.c.

References GNUNET_TRANSPORT_PluginFunctions::address_pretty_printer, GNUNET_TRANSPORT_PluginFunctions::address_to_string, GNUNET_TRANSPORT_PluginFunctions::check_address, client_configure_plugin(), client_start(), GNUNET_TRANSPORT_PluginEnvironment::cls, GNUNET_TRANSPORT_PluginFunctions::cls, GNUNET_TRANSPORT_PluginFunctions::disconnect_peer, GNUNET_TRANSPORT_PluginFunctions::disconnect_session, env, HTTP_Client_Plugin::env, GNUNET_TRANSPORT_PluginFunctions::get_network, GNUNET_TRANSPORT_PluginFunctions::get_network_for_address, GNUNET_TRANSPORT_PluginFunctions::get_session, GNUNET_CONTAINER_multipeermap_create(), GNUNET_new, GNUNET_SYSERR, GNUNET_YES, http_client_plugin_address_suggested(), http_client_plugin_address_to_string(), http_client_plugin_get_network(), http_client_plugin_get_network_for_address(), http_client_plugin_get_session(), http_client_plugin_peer_disconnect(), http_client_plugin_send(), http_client_plugin_session_disconnect(), http_client_plugin_setup_monitor(), http_client_plugin_update_inbound_delay(), http_client_plugin_update_session_timeout(), http_client_query_keepalive_factor(), http_common_plugin_address_pretty_printer(), http_common_plugin_string_to_address(), HTTP_Client_Plugin::last_tag, LIBGNUNET_PLUGIN_TRANSPORT_DONE, HTTP_Client_Plugin::name, plugin, HTTP_Client_Plugin::protocol, GNUNET_TRANSPORT_PluginFunctions::query_keepalive_factor, GNUNET_TRANSPORT_PluginEnvironment::receive, GNUNET_TRANSPORT_PluginFunctions::send, HTTP_Client_Plugin::sessions, GNUNET_TRANSPORT_PluginFunctions::setup_monitor, GNUNET_TRANSPORT_PluginFunctions::string_to_address, GNUNET_TRANSPORT_PluginFunctions::update_inbound_delay, and GNUNET_TRANSPORT_PluginFunctions::update_session_timeout.

2473 {
2476  struct HTTP_Client_Plugin *plugin;
2477 
2478  if (NULL == env->receive)
2479  {
2480  /* run in 'stub' mode (i.e. as part of gnunet-peerinfo), don't fully
2481  initialize the plugin or the API */
2483  api->cls = NULL;
2487  return api;
2488  }
2489 
2490  plugin = GNUNET_new (struct HTTP_Client_Plugin);
2491  plugin->env = env;
2493  GNUNET_YES);
2495  api->cls = plugin;
2496  api->send = &http_client_plugin_send;
2510 #if BUILD_HTTPS
2511  plugin->name = "transport-https_client";
2512  plugin->protocol = "https";
2513 #else
2514  plugin->name = "transport-http_client";
2515  plugin->protocol = "http";
2516 #endif
2517  plugin->last_tag = 1;
2518 
2519  if (GNUNET_SYSERR == client_configure_plugin (plugin))
2520  {
2522  return NULL;
2523  }
2524 
2525  /* Start client */
2526  if (GNUNET_SYSERR == client_start (plugin))
2527  {
2529  return NULL;
2530  }
2531  return api;
2532 }
static enum GNUNET_NetworkType http_client_plugin_get_network_for_address(void *cls, const struct GNUNET_HELLO_Address *address)
Function obtain the network type for an address.
static int http_client_plugin_address_suggested(void *cls, const void *addr, size_t addrlen)
Another peer has suggested an address for this peer and transport plugin.
static unsigned int http_client_query_keepalive_factor(void *cls)
Function that is called to get the keepalive factor.
GNUNET_TRANSPORT_CreateSession get_session
Function that will be called tell the plugin to create a session object.
static int http_client_plugin_session_disconnect(void *cls, struct GNUNET_ATS_Session *s)
Disconnect a session.
GNUNET_TRANSPORT_AddressToString address_to_string
Function that will be called to convert a binary address to a string (numeric conversion only)...
static int client_configure_plugin(struct HTTP_Client_Plugin *plugin)
Configure plugin.
uint32_t last_tag
Last used unique HTTP connection tag.
int http_common_plugin_string_to_address(void *cls, const char *addr, uint16_t addrlen, void **buf, size_t *added)
Function called to convert a string address to a binary address.
GNUNET_TRANSPORT_TransmitFunction send
Function that the transport service will use to transmit data to another peer.
GNUNET_TRANSPORT_DisconnectPeerFunction disconnect_peer
Function that can be used to force the plugin to disconnect from the given peer and cancel all previo...
GNUNET_TRANSPORT_DisconnectSessionFunction disconnect_session
Function that can be used to force the plugin to disconnect from the given peer and cancel all previo...
Each plugin is required to return a pointer to a struct of this type as the return value from its ent...
GNUNET_TRANSPORT_SessionMonitorSetup setup_monitor
Function to monitor the sessions managed by the plugin.
static void http_client_plugin_update_session_timeout(void *cls, const struct GNUNET_PeerIdentity *peer, struct GNUNET_ATS_Session *session)
Function that will be called whenever the transport service wants to notify the plugin that a session...
static struct GNUNET_ATS_Session * http_client_plugin_get_session(void *cls, const struct GNUNET_HELLO_Address *address)
Creates a new outbound session the transport service will use to send data to the peer...
#define GNUNET_new(type)
Allocate a struct or union of the given type.
struct GNUNET_TRANSPORT_PluginEnvironment * env
Our environment.
struct GNUNET_CONTAINER_MultiPeerMap * GNUNET_CONTAINER_multipeermap_create(unsigned int len, int do_not_copy_keys)
Create a multi peer map (hash map for public keys of peers).
GNUNET_TRANSPORT_PluginReceiveCallback receive
Function that should be called by the transport plugin whenever a message is received.
GNUNET_TRANSPORT_UpdateSessionTimeout update_session_timeout
Function that will be called whenever the transport service wants to notify the plugin that a session...
void * cls
Closure for the various callbacks.
void * cls
Closure for all of the callbacks.
GNUNET_TRANSPORT_StringToAddress string_to_address
Function that will be called to convert a string address to binary (numeric conversion only)...
The transport service will pass a pointer to a struct of this type as the first and only argument to ...
GNUNET_TRANSPORT_GetNetworkType get_network
Function to obtain the network type for a session.
void http_common_plugin_address_pretty_printer(void *cls, const char *type, const void *addr, size_t addrlen, int numeric, struct GNUNET_TIME_Relative timeout, GNUNET_TRANSPORT_AddressStringCallback asc, void *asc_cls)
Convert the transports address to a nice, human-readable format.
static ssize_t http_client_plugin_send(void *cls, struct GNUNET_ATS_Session *s, const char *msgbuf, size_t msgbuf_size, unsigned int priority, struct GNUNET_TIME_Relative to, GNUNET_TRANSPORT_TransmitContinuation cont, void *cont_cls)
Function that can be used by the transport service to transmit a message using the plugin...
GNUNET_TRANSPORT_UpdateInboundDelay update_inbound_delay
Function that will be called whenever the transport service wants to notify the plugin that the inbou...
static enum GNUNET_NetworkType http_client_plugin_get_network(void *cls, struct GNUNET_ATS_Session *session)
Function obtain the network type for a session.
struct GNUNET_CONTAINER_MultiPeerMap * sessions
Open sessions.
static const char * http_client_plugin_address_to_string(void *cls, const void *addr, size_t addrlen)
Function to convert an address to a human-readable string.
struct GNUNET_MQ_Envelope * env
Definition: 005.c:1
static void http_client_plugin_peer_disconnect(void *cls, const struct GNUNET_PeerIdentity *target)
Function that can be used to force the plugin to disconnect from the given peer and cancel all previo...
#define LIBGNUNET_PLUGIN_TRANSPORT_DONE
Encapsulation of all of the state of the plugin.
GNUNET_TRANSPORT_QueryKeepaliveFactorFunction query_keepalive_factor
Function that is used to query keepalive factor.
static void http_client_plugin_setup_monitor(void *cls, GNUNET_TRANSPORT_SessionInfoCallback sic, void *sic_cls)
Begin monitoring sessions of a plugin.
static int client_start(struct HTTP_Client_Plugin *plugin)
Setup http_client plugin.
struct Plugin * plugin
GNUNET_TRANSPORT_AddressPrettyPrinter address_pretty_printer
Function to pretty-print addresses.
GNUNET_TRANSPORT_CheckAddress check_address
Function that will be called to check if a binary address for this plugin is well-formed and correspo...
static void http_client_plugin_update_inbound_delay(void *cls, const struct GNUNET_PeerIdentity *peer, struct GNUNET_ATS_Session *s, struct GNUNET_TIME_Relative delay)
Function that will be called whenever the transport service wants to notify the plugin that the inbou...
GNUNET_TRANSPORT_GetNetworkTypeForAddress get_network_for_address
Function to obtain the network type for an address.
Here is the call graph for this function: